new file mode 100644
--- /dev/null
+++ b/taskcluster/ci/fetch/benchmarks.yml
@@ -0,0 +1,8 @@
+unity-webgl:
+  description: unity-webgl benchmark
+  fetch:
+    type: static-url
+    artifact-name: unity-webgl.zip
+    url: https://github.com/mozilla/perf-automation/releases/download/unity-webgl-v1/unity-webgl-6beb3d3e22ab.zip
+    sha256: f71ee3a3f5b9513f041e1dd01c032d51f2071e1ad130e8ac2cf0c553c468b9ea
+    size: 27062962

--- a/taskcluster/ci/fetch/kind.yml
+++ b/taskcluster/ci/fetch/kind.yml
@@ -6,9 +6,10 @@ loader: taskgraph.loader.transform:loade
 
 transforms:
     - taskgraph.transforms.fetch:transforms
     - taskgraph.transforms.try_job:transforms
     - taskgraph.transforms.job:transforms
     - taskgraph.transforms.task:transforms
 
 jobs-from:
+    - benchmarks.yml
     - toolchains.yml

--- a/taskcluster/ci/test/raptor.yml
+++ b/taskcluster/ci/test/raptor.yml
@@ -187,8 +187,37 @@ raptor-sunspider-chrome:
     try-name: raptor-sunspider-chrome
     treeherder-symbol: Rap-C(ss)
     run-on-projects: ['try', 'mozilla-central']
     max-run-time: 1800
     mozharness:
         extra-options:
             - --test=raptor-sunspider
             - --app=chrome
+
+raptor-unity-webgl-firefox:
+    description: "Raptor Unity WebGL on Firefox"
+    try-name: raptor-unity-webgl-firefox
+    treeherder-symbol: Rap(ugl)
+    run-on-projects: ['try', 'mozilla-central']
+    tier: 3
+    max-run-time: 3600
+    mozharness:
+        extra-options:
+            - --test=raptor-unity-webgl
+    fetches:
+        fetch:
+            - unity-webgl
+
+raptor-unity-webgl-chrome:
+    description: "Raptor Unity WebGL on Chrome"
+    try-name: raptor-unity-webgl-chrome
+    treeherder-symbol: Rap-C(ugl)
+    run-on-projects: ['try', 'mozilla-central']
+    tier: 3
+    max-run-time: 3600
+    mozharness:
+        extra-options:
+            - --test=raptor-unity-webgl
+            - --app=chrome
+    fetches:
+        fetch:
+            - unity-webgl

--- a/taskcluster/ci/test/test-platforms.yml
+++ b/taskcluster/ci/test/test-platforms.yml
@@ -49,17 +49,18 @@ linux64/opt:
         - opt-only-tests
         - desktop-screenshot-capture
         - talos
         - awsy
         - mochitest-headless
         - linux-talos-flex
         - raptor-firefox
         - raptor-chrome
-
+        - raptor-fetch-firefox
+        - raptor-fetch-chrome
 linux64-nightly/opt:
     build-platform: linux64-nightly/opt
     test-sets:
         - common-tests
         - web-platform-tests
         - opt-only-tests
         - desktop-screenshot-capture
         - awsy
@@ -75,16 +76,17 @@ linux64-devedition/opt:
 # TODO: use 'pgo' and 'asan' labels here, instead of -pgo/opt
 linux64-pgo/opt:
     build-platform: linux64-pgo/opt
     test-sets:
         - common-tests
         - web-platform-tests
         - talos
         - raptor-firefox
+        - raptor-fetch-firefox
 
 linux64-asan/opt:
     build-platform: linux64-asan/opt
     test-sets:
         - common-tests
         - web-platform-tests
 
 # Stylo sequential runs check memory and performance when using a single thread.
@@ -97,17 +99,17 @@ linux64-stylo-sequential/opt:
 linux64-qr/opt:
     build-platform: linux64/opt
     test-sets:
         - linux-qr-tests
         - talos
         - awsy
         - web-platform-tests
         - raptor-firefox
-
+        - raptor-fetch-firefox
 linux64-qr/debug:
     build-platform: linux64/debug
     test-sets:
         - linux-qr-tests
         - web-platform-tests
 
 linux64-ccov/debug:
     build-platform: linux64-ccov/debug

--- a/taskcluster/ci/test/test-sets.yml
+++ b/taskcluster/ci/test/test-sets.yml
@@ -96,16 +96,24 @@ raptor-chrome:
     - raptor-speedometer-chrome
     - raptor-stylebench-chrome
     - raptor-motionmark-htmlsuite-chrome
     - raptor-motionmark-animometer-chrome
     - raptor-webaudio-chrome
     - raptor-gdocs-chrome
     - raptor-sunspider-chrome
 
+# Fetch tasks are only supported on Linux for now,
+# so these need to be separate sets.
+raptor-fetch-firefox:
+    - raptor-unity-webgl-firefox
+
+raptor-fetch-chrome:
+    - raptor-unity-webgl-chrome
+
 awsy:
     - awsy
     - awsy-base
 
 awsy-stylo-sequential:
     - awsy-stylo-sequential
 
 ##

--- a/taskcluster/taskgraph/transforms/tests.py
+++ b/taskcluster/taskgraph/transforms/tests.py
@@ -1033,16 +1033,19 @@ def make_job_description(config, tests):
         name = '{}-{}'.format(test['test-platform'], test['test-name'])
         jobdesc['name'] = name
         jobdesc['label'] = label
         jobdesc['description'] = test['description']
         jobdesc['attributes'] = attributes
         jobdesc['dependencies'] = {'build': build_label}
         jobdesc['job-from'] = test['job-from']
 
+        if test.get('fetches'):
+            jobdesc['fetches'] = test['fetches']
+
         if test['mozharness']['requires-signed-builds'] is True:
             jobdesc['dependencies']['build-signing'] = test['build-signing-label']
 
         jobdesc['expires-after'] = test['expires-after']
         jobdesc['routes'] = []
         jobdesc['run-on-projects'] = test['run-on-projects']
         jobdesc['scopes'] = []
         jobdesc['tags'] = test.get('tags', {})

--- a/testing/raptor/raptor/benchmark.py
+++ b/testing/raptor/raptor/benchmark.py
@@ -1,15 +1,16 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 from __future__ import absolute_import
 
 import os
+import shutil
 import socket
 
 from mozlog import get_proxy_logger
 
 from wptserve import server, handlers
 
 LOG = get_proxy_logger(component="raptor-benchmark")
 here = os.path.abspath(os.path.dirname(__file__))
@@ -33,16 +34,25 @@ class Benchmark(object):
 
         # now add path for benchmark source; locally we put it in a raptor benchmarks
         # folder; in production the files are automatically copied to a different dir
         if self.config.get('run_local', False):
             self.bench_dir = os.path.join(self.bench_dir, 'testing', 'raptor', 'benchmarks')
         else:
             self.bench_dir = os.path.join(self.bench_dir, 'tests', 'webkit', 'PerformanceTests')
 
+            # Some benchmarks may have been downloaded from a fetch task, make
+            # sure they get copied over.
+            fetches_dir = os.environ.get('MOZ_FETCHES_DIR')
+            if fetches_dir and os.path.isdir(fetches_dir):
+                for name in os.listdir(fetches_dir):
+                    path = os.path.join(fetches_dir, name)
+                    if os.path.isdir(path):
+                        shutil.copytree(path, os.path.join(self.bench_dir, name))
+
         LOG.info("bench_dir contains:")
         LOG.info(os.listdir(self.bench_dir))
 
         # now have the benchmark source ready, go ahead and serve it up!
         self.start_http_server()
 
     def start_http_server(self):
         self.write_server_headers()