--- a/services/datareporting/DataReportingService.js
+++ b/services/datareporting/DataReportingService.js
@@ -386,25 +386,16 @@ DataReportingService.prototype = Object.
 
     this._clientID = CommonUtils.generateUUID();
     this._saveClientIdTask = this._saveClientID();
     yield this._saveClientIdTask;
 
     return this._clientID;
   }),
 
-  /**
-   * Returns the SessionRecorder instance associated with the data reporting service.
-   * Returns an actual object only if FHR is enabled and after initialization,
-   * else returns undefined.
-   */
-  getSessionRecorder: function() {
-    return this.sessionRecorder;
-  },
-
   /*
    * Simulate a restart of the service. This is for testing only.
    */
   _reset: Task.async(function* () {
     yield this._loadClientIdTask;
     yield this._saveClientIdTask;
     this._clientID = null;
   }),

--- a/toolkit/components/telemetry/TelemetryPing.jsm
+++ b/toolkit/components/telemetry/TelemetryPing.jsm
@@ -367,27 +367,16 @@ let Impl = {
     try {
       hasPingBeenSent = Telemetry.getHistogramById("TELEMETRY_SUCCESS").snapshot().sum > 0;
     } catch(e) {
     }
     if (!forSavedSession || hasPingBeenSent) {
       ret.savedPings = TelemetryFile.pingsLoaded;
     }
 
-    ret.activeTicks = -1;
-    if ("@mozilla.org/datareporting/service;1" in Cc) {
-      let drs = Cc["@mozilla.org/datareporting/service;1"]
-                  .getService(Ci.nsISupports)
-                  .wrappedJSObject;
-
-      let sr = drs.getSessionRecorder();
-      if (sr)
-        ret.activeTicks = sr.activeTicks;
-    }
-
     ret.pingsOverdue = TelemetryFile.pingsOverdue;
     ret.pingsDiscarded = TelemetryFile.pingsDiscarded;
 
     return ret;
   },
 
   /**
    * When reflecting a histogram into JS, Telemetry hands us an object

--- a/toolkit/components/telemetry/tests/unit/test_TelemetryPing.js
+++ b/toolkit/components/telemetry/tests/unit/test_TelemetryPing.js
@@ -40,17 +40,16 @@ const PR_TRUNCATE = 0x20;
 const RW_OWNER = 0600;
 
 const NUMBER_OF_THREADS_TO_LAUNCH = 30;
 let gNumberOfThreadsLaunched = 0;
 
 const PREF_BRANCH = "toolkit.telemetry.";
 const PREF_ENABLED = PREF_BRANCH + "enabled";
 const PREF_FHR_UPLOAD_ENABLED = "datareporting.healthreport.uploadEnabled";
-const PREF_FHR_SERVICE_ENABLED = "datareporting.healthreport.service.enabled";
 
 const Telemetry = Cc["@mozilla.org/base/telemetry;1"].getService(Ci.nsITelemetry);
 
 let gHttpServer = new HttpServer();
 let gServerStarted = false;
 let gRequestIterator = null;
 let gDataReportingClientID = null;
 
@@ -215,17 +214,16 @@ function checkPayload(request, reason, s
   do_check_eq(reason, pathComponents[1]);
   do_check_eq(request.getHeader("content-type"), "application/json; charset=UTF-8");
   do_check_true(payload.simpleMeasurements.uptime >= 0);
   do_check_true(payload.simpleMeasurements.startupInterrupted === 1);
   do_check_eq(payload.simpleMeasurements.shutdownDuration, SHUTDOWN_TIME);
   do_check_eq(payload.simpleMeasurements.savedPings, 1);
   do_check_true("maximalNumberOfConcurrentThreads" in payload.simpleMeasurements);
   do_check_true(payload.simpleMeasurements.maximalNumberOfConcurrentThreads >= gNumberOfThreadsLaunched);
-  do_check_true(payload.simpleMeasurements.activeTicks >= 0);
 
   do_check_eq(payload.simpleMeasurements.failedProfileLockCount,
               FAILED_PROFILE_LOCK_ATTEMPTS);
   let profileDirectory = Services.dirsvc.get("ProfD", Ci.nsIFile);
   let failedProfileLocksFile = profileDirectory.clone();
   failedProfileLocksFile.append("Telemetry.FailedProfileLocks.txt");
   do_check_true(!failedProfileLocksFile.exists());
 
@@ -429,31 +427,23 @@ function run_test() {
   try {
     let gfxInfo = Cc["@mozilla.org/gfx/info;1"].getService(Ci.nsIGfxInfoDebug);
     gfxInfo.spoofVendorID("0xabcd");
     gfxInfo.spoofDeviceID("0x1234");
   } catch (x) {
     // If we can't test gfxInfo, that's fine, we'll note it later.
   }
 
-  // make sure getSessionRecorder() can be called before the DRS init.
-  // It's not a requirement that it returns undefined, but that's how it behaves
-  // now - so just let this test fail if this behavior changes.
-  do_check_true(gDatareportingService.getSessionRecorder() === undefined);
-
   // Addon manager needs a profile directory
   do_get_profile();
   createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "1", "1.9.2");
 
   Services.prefs.setBoolPref(PREF_ENABLED, true);
   Services.prefs.setBoolPref(PREF_FHR_UPLOAD_ENABLED, true);
 
-  // Initially disable FHR to verify that activeTicks ends up as -1
-  Services.prefs.setBoolPref(PREF_FHR_SERVICE_ENABLED, false);
-
   // Send the needed startup notifications to the datareporting service
   // to ensure that it has been initialized.
   if ("@mozilla.org/datareporting/service;1" in Cc) {
     gDatareportingService.observe(null, "app-startup", null);
     gDatareportingService.observe(null, "profile-after-change", null);
   }
 
   // Make it look like we've previously failed to lock a profile a couple times.
@@ -500,29 +490,16 @@ function actualTest() {
   registerFakePluginHost();
 
   run_next_test();
 }
 
 add_task(function* asyncSetup() {
   yield TelemetryPing.setup();
 
-  // When FHR is disabled, the payload's activeTicks should be -1.
-  do_check_true(TelemetryPing.getPayload().simpleMeasurements.activeTicks == -1);
-
-  // re-enable FHR and re-init the DRS.
-  // Note: this relies on the fact that the data reporting service reinitializes
-  // itself when calling its 'observe' method, without checking if it's already
-  // initialized. If this DRS behavior changes, this test would need to be adapted.
-  Services.prefs.setBoolPref(PREF_FHR_SERVICE_ENABLED, true);
-  if ("@mozilla.org/datareporting/service;1" in Cc) {
-    gDatareportingService.observe(null, "app-startup", null);
-    gDatareportingService.observe(null, "profile-after-change", null);
-  }
-
   if ("@mozilla.org/datareporting/service;1" in Cc) {
     gDataReportingClientID = yield gDatareportingService.getClientID();
 
     // We should have cached the client id now. Lets confirm that by
     // checking the client id before the async ping setup is finished.
     let promisePingSetup = TelemetryPing.reset();
     do_check_eq(TelemetryPing.clientID, gDataReportingClientID);
     yield promisePingSetup;