Add WebTaskRunner::postCancellableTask

third_party/WebKit/Source/platform/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/config.gni")
@@ skipping 1606 matching lines @@
     "PODFreeListArenaTest.cpp",
     "PODIntervalTreeTest.cpp",
     "PODRedBlackTreeTest.cpp",
     "ScopedOrientationChangeIndicatorTest.cpp",
     "SharedBufferTest.cpp",
     "TimerTest.cpp",
     "UUIDTest.cpp",
     "UserGestureIndicatorTest.cpp",
     "WebIconSizesParserTest.cpp",
     "WebScreenInfoTest.cpp",
+    "WebTaskRunnerTest.cpp",
     "WebVectorTest.cpp",
     "animation/AnimationTranslationUtilTest.cpp",
     "animation/CompositorAnimationHostTest.cpp",
     "animation/CompositorAnimationPlayerTest.cpp",
     "animation/CompositorAnimationTest.cpp",
     "animation/CompositorAnimationTimelineTest.cpp",
     "animation/CompositorFloatAnimationCurveTest.cpp",
     "animation/TimingFunctionTest.cpp",
     "blob/BlobDataTest.cpp",
     "clipboard/ClipboardUtilitiesTest.cpp",
@@ skipping 339 matching lines @@
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     ":test_support",
     "//cc/surfaces:surface_id",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }