new file mode 100644
--- /dev/null
+++ b/testing/web-platform/meta/content-security-policy/__dir__.ini
@@ -0,0 +1,1 @@
+prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/base-uri/base-uri_iframe_sandbox.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/base-uri/base-uri_iframe_sandbox.sub.html.ini
@@ -1,3 +1,2 @@
 [base-uri_iframe_sandbox.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   expected: ERROR

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/base-uri/report-uri-does-not-respect-base-uri.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[report-uri-does-not-respect-base-uri.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/blob/blob-urls-do-not-match-self.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[blob-urls-do-not-match-self.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/child-src/child-src-worker-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/child-src/child-src-worker-blocked.sub.html.ini
@@ -1,5 +1,4 @@
 [child-src-worker-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Should throw a securitypolicyviolation event]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/connect-src/connect-src-beacon-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/connect-src/connect-src-beacon-blocked.sub.html.ini
@@ -1,9 +1,8 @@
 [connect-src-beacon-blocked.sub.html]
   type: testharness
-  prefs: [security.csp.enable_violation_events:true]
   [sendBeacon should not throw.]
     expected: FAIL
 
   [redirect case]
     expected: TIMEOUT
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/connect-src/connect-src-beacon-redirect-to-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[connect-src-beacon-redirect-to-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/connect-src/connect-src-eventsource-blocked.sub.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[connect-src-eventsource-blocked.sub.html]
-  type: testharness
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/connect-src/connect-src-eventsource-redirect-to-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/connect-src/connect-src-eventsource-redirect-to-blocked.sub.html.ini
@@ -1,6 +1,5 @@
 [connect-src-eventsource-redirect-to-blocked.sub.html]
   type: testharness
-  prefs: [security.csp.enable_violation_events:true]
   [Expecting logs: ["PASS EventSource() did not follow the disallowed redirect.","PASS successfullyParsed is true","TEST COMPLETE"\]]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/connect-src/connect-src-websocket-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/connect-src/connect-src-websocket-blocked.sub.html.ini
@@ -1,6 +1,5 @@
 [connect-src-websocket-blocked.sub.html]
   type: testharness
-  prefs: [security.csp.enable_violation_events:true]
   [WebSocket should fire error event.]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/connect-src/connect-src-xmlhttprequest-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/connect-src/connect-src-xmlhttprequest-blocked.sub.html.ini
@@ -1,8 +1,7 @@
 [connect-src-xmlhttprequest-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [XHR should fire onerror.]
     expected: TIMEOUT
 
   [XHR should fire onerror after a redirect.]
     expected: FAIL
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/connect-src/connect-src-xmlhttprequest-redirect-to-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[connect-src-xmlhttprequest-redirect-to-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/connect-src/worker-from-guid.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[worker-from-guid.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/font-src/font-stylesheet-font-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[font-stylesheet-font-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/form-action/form-action-src-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/form-action/form-action-src-blocked.sub.html.ini
@@ -1,6 +1,5 @@
 [form-action-src-blocked.sub.html]
   type: testharness
-  prefs: [security.csp.enable_violation_events:true]
   [form-action-src-blocked]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/form-action/form-action-src-get-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/form-action/form-action-src-get-blocked.sub.html.ini
@@ -1,6 +1,5 @@
 [form-action-src-get-blocked.sub.html]
   type: testharness
-  prefs: [security.csp.enable_violation_events:true]
   [form-action-src-allowed]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/form-action/form-action-src-javascript-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/form-action/form-action-src-javascript-blocked.sub.html.ini
@@ -1,6 +1,5 @@
 [form-action-src-javascript-blocked.sub.html]
   type: testharness
-  prefs: [security.csp.enable_violation_events:true]
   [form-action-src-javascript-blocked]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/generic/generic-0_1-img-src.html.ini
+++ b/testing/web-platform/meta/content-security-policy/generic/generic-0_1-img-src.html.ini
@@ -1,8 +1,7 @@
 [generic-0_1-img-src.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Violation report status OK.]
     expected: FAIL
 
   [Should fire violation events for every failed violation]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/generic/generic-0_1-script-src.html.ini
+++ b/testing/web-platform/meta/content-security-policy/generic/generic-0_1-script-src.html.ini
@@ -1,8 +1,7 @@
 [generic-0_1-script-src.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Violation report status OK.]
     expected: FAIL
 
   [Should fire violation events for every failed violation]
     expected: FAIL
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/generic/generic-0_10_1.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[generic-0_10_1.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/generic/generic-0_2_2.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[generic-0_2_2.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/generic/generic-0_2_3.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[generic-0_2_3.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/generic/generic-0_8_1.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[generic-0_8_1.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/img-src/report-blocked-data-uri.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[report-blocked-data-uri.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/media-src/media-src-7_1_2.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/media-src/media-src-7_1_2.sub.html.ini
@@ -1,5 +1,4 @@
 [media-src-7_1_2.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that securitypolicyviolation events are fired]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/media-src/media-src-7_2_2.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/media-src/media-src-7_2_2.sub.html.ini
@@ -1,5 +1,4 @@
 [media-src-7_2_2.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that securitypolicyviolation events are fired]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/media-src/media-src-7_3_2.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/media-src/media-src-7_3_2.sub.html.ini
@@ -1,5 +1,4 @@
 [media-src-7_3_2.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that securitypolicyviolation events are fired]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/media-src/media-src-blocked.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/media-src/media-src-blocked.sub.html.ini
@@ -1,5 +1,4 @@
 [media-src-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that securitypolicyviolation events are fired]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/navigation/to-javascript-url-script-src.html.ini
+++ b/testing/web-platform/meta/content-security-policy/navigation/to-javascript-url-script-src.html.ini
@@ -1,11 +1,10 @@
 [to-javascript-url-script-src.html]
   expected: TIMEOUT
-  prefs: [security.csp.enable_violation_events:true]
   [<iframe src='javascript:'> blocked without 'unsafe-inline'.]
     expected: TIMEOUT
 
   [<iframe> navigated to 'javascript:' blocked without 'unsafe-inline'.]
     expected: TIMEOUT
 
   [<iframe src='...'> with 'unsafe-inline' navigated to 'javascript:' blocked in this document]
     expected: TIMEOUT

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/object-src/object-src-url-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[object-src-url-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/injected-inline-script-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[injected-inline-script-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/script-src/javascript-window-open-blocked.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/javascript-window-open-blocked.html.ini
@@ -1,5 +1,4 @@
 [javascript-window-open-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Check that a securitypolicyviolation event is fired]
     expected: FAIL
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-1_1.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[script-src-1_1.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-1_10.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-1_10.html.ini
@@ -1,5 +1,4 @@
 [script-src-1_10.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that securitypolicyviolation event is fired]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-1_2.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-1_2.html.ini
@@ -1,4 +1,3 @@
 [script-src-1_2.html]
   disabled:
     if os == "win": bug 1172411
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-1_2_1.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-1_2_1.html.ini
@@ -1,4 +1,3 @@
 [script-src-1_2_1.html]
   disabled:
     if os == "win": bug 1094323
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-1_4.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-1_4.html.ini
@@ -1,5 +1,4 @@
 [script-src-1_4.html]
-  prefs: [security.csp.enable_violation_events:true]
   [eval() should throw without 'unsafe-eval' keyword source in script-src directive.]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-1_4_1.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-1_4_1.html.ini
@@ -1,4 +1,3 @@
 [script-src-1_4_1.html]
   disabled:
     if os == "win": bug 1094323
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-1_4_2.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-1_4_2.html.ini
@@ -1,5 +1,4 @@
 [script-src-1_4_2.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Unsafe eval ran in Function() constructor.]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-report-only-policy-works-with-external-hash-policy.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-report-only-policy-works-with-external-hash-policy.html.ini
@@ -1,8 +1,7 @@
 [script-src-report-only-policy-works-with-external-hash-policy.html]
-  prefs: [security.csp.enable_violation_events:true]
   [External script in a script tag with matching SRI hash should run.]
     expected: FAIL
 
   [Should fire securitypolicyviolation event]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-report-only-policy-works-with-hash-policy.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-report-only-policy-works-with-hash-policy.html.ini
@@ -1,5 +1,4 @@
 [script-src-report-only-policy-works-with-hash-policy.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that the securitypolicyviolation event is fired]
     expected: FAIL
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_discard_whitelist.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[script-src-strict_dynamic_discard_whitelist.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_double_policy_different_nonce.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[script-src-strict_dynamic_double_policy_different_nonce.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_double_policy_report_only.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[script-src-strict_dynamic_double_policy_report_only.html]
-  type: testharness
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_hashes.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_hashes.html.ini
@@ -1,3 +1,2 @@
 [script-src-strict_dynamic_hashes.html]
   expected: ERROR
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_javascript_uri.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[script-src-strict_dynamic_javascript_uri.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_non_parser_inserted_incorrect_nonce.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[script-src-strict_dynamic_non_parser_inserted_incorrect_nonce.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_parser_inserted.html.ini
+++ b/testing/web-platform/meta/content-security-policy/script-src/script-src-strict_dynamic_parser_inserted.html.ini
@@ -1,9 +1,8 @@
 [script-src-strict_dynamic_parser_inserted.html]
   expected: TIMEOUT
-  prefs: [security.csp.enable_violation_events:true]
   [Script injected via `innerHTML` is not allowed with `strict-dynamic`.]
     expected: TIMEOUT
 
   [Script injected via `insertAdjacentHTML` is not allowed with `strict-dynamic`.]
     expected: TIMEOUT
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/scripthash-unicode-normalization.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[scripthash-unicode-normalization.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/scriptnonce-and-scripthash.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[scriptnonce-and-scripthash.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/script-src/scriptnonce-ignore-unsafeinline.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[scriptnonce-ignore-unsafeinline.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/blockeduri-inline.html.ini
+++ b/testing/web-platform/meta/content-security-policy/securitypolicyviolation/blockeduri-inline.html.ini
@@ -1,5 +1,4 @@
 [blockeduri-inline.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Inline violations have a blockedURI of 'inline']
     expected: FAIL
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/idl.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[idl.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/img-src-redirect-upgrade-reporting.https.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[img-src-redirect-upgrade-reporting.https.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/securitypolicyviolation-block-cross-origin-image-from-script.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/securitypolicyviolation/securitypolicyviolation-block-cross-origin-image-from-script.sub.html.ini
@@ -1,5 +1,4 @@
 [securitypolicyviolation-block-cross-origin-image-from-script.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Non-redirected cross-origin URLs are not stripped.]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/securitypolicyviolation-block-cross-origin-image.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/securitypolicyviolation/securitypolicyviolation-block-cross-origin-image.sub.html.ini
@@ -1,5 +1,4 @@
 [securitypolicyviolation-block-cross-origin-image.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Non-redirected cross-origin URLs are not stripped.]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/securitypolicyviolation-block-image-from-script.sub.html.ini
+++ b/testing/web-platform/meta/content-security-policy/securitypolicyviolation/securitypolicyviolation-block-image-from-script.sub.html.ini
@@ -1,5 +1,4 @@
 [securitypolicyviolation-block-image-from-script.sub.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Non-redirected cross-origin URLs are not stripped.]
     expected: FAIL
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/securitypolicyviolation-block-image.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[securitypolicyviolation-block-image.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/targeting.html.ini
+++ b/testing/web-platform/meta/content-security-policy/securitypolicyviolation/targeting.html.ini
@@ -1,10 +1,10 @@
 [targeting.html]
-  prefs: [dom.webcomponents.shadowdom.enabled:true, security.csp.enable_violation_events:true]
+  prefs: [dom.webcomponents.shadowdom.enabled:true]
   expected: TIMEOUT
   [These tests should not fail.]
     expected: NOTRUN
 
   [Inline violations target the right element.]
     expected: FAIL
 
   [Correct targeting inside shadow tree (inline handler).]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/securitypolicyviolation/upgrade-insecure-requests-reporting.https.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[upgrade-insecure-requests-reporting.https.html]
-  type: testharness
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/injected-inline-style-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[injected-inline-style-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/inline-style-allowed-while-cloning-objects.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[inline-style-allowed-while-cloning-objects.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/inline-style-attribute-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[inline-style-attribute-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-hash-blocked.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-hash-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-imported-style-blocked.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[style-src-imported-style-blocked.html]
-  type: testharness
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-injected-inline-style-blocked.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-injected-inline-style-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-injected-stylesheet-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-injected-stylesheet-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-inline-style-attribute-blocked.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-inline-style-attribute-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-inline-style-blocked.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-inline-style-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-inline-style-nonce-blocked-error-event.html.ini
+++ b/testing/web-platform/meta/content-security-policy/style-src/style-src-inline-style-nonce-blocked-error-event.html.ini
@@ -1,6 +1,5 @@
 [style-src-inline-style-nonce-blocked-error-event.html]
   expected: TIMEOUT
-  prefs: [security.csp.enable_violation_events:true]
   [Test that paragraph remains unmodified and error events received.]
     expected: NOTRUN
 

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-inline-style-nonce-blocked.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-inline-style-nonce-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-none-blocked.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-none-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/style-src-stylesheet-nonce-blocked.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[style-src-stylesheet-nonce-blocked.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/stylehash-basic-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[stylehash-basic-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/stylenonce-allowed.sub.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[stylenonce-allowed.sub.html]
-  type: testharness
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/style-src/stylenonce-blocked.sub.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[stylenonce-blocked.sub.html]
-  type: testharness
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/svg/object-in-svg-foreignobject.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[object-in-svg-foreignobject.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/svg/svg-inline.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[svg-inline.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/unsafe-eval/eval-blocked-and-sends-report.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[eval-blocked-and-sends-report.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/unsafe-eval/eval-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[eval-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/unsafe-eval/eval-scripts-setInterval-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[eval-scripts-setInterval-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/unsafe-eval/eval-scripts-setTimeout-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[eval-scripts-setTimeout-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

deleted file mode 100644
--- a/testing/web-platform/meta/content-security-policy/unsafe-eval/function-constructor-blocked.sub.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[function-constructor-blocked.sub.html]
-  prefs: [security.csp.enable_violation_events:true]

--- a/testing/web-platform/meta/content-security-policy/unsafe-hashed-attributes/script_event_handlers_allowed.html.ini
+++ b/testing/web-platform/meta/content-security-policy/unsafe-hashed-attributes/script_event_handlers_allowed.html.ini
@@ -1,5 +1,4 @@
 [script_event_handlers_allowed.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that the inline event handler is allowed to run]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/unsafe-hashed-attributes/script_event_handlers_denied_matching_hash_no_unsafe_inline_attribute.html.ini
+++ b/testing/web-platform/meta/content-security-policy/unsafe-hashed-attributes/script_event_handlers_denied_matching_hash_no_unsafe_inline_attribute.html.ini
@@ -1,5 +1,4 @@
 [script_event_handlers_denied_matching_hash_no_unsafe_inline_attribute.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that the inline event handler is not allowed to run]
     expected: FAIL
 

--- a/testing/web-platform/meta/content-security-policy/unsafe-hashed-attributes/script_event_handlers_denied_not_matching_hash.html.ini
+++ b/testing/web-platform/meta/content-security-policy/unsafe-hashed-attributes/script_event_handlers_denied_not_matching_hash.html.ini
@@ -1,5 +1,4 @@
 [script_event_handlers_denied_not_matching_hash.html]
-  prefs: [security.csp.enable_violation_events:true]
   [Test that the inline event handler is not allowed to run]
     expected: FAIL