Schedule bitmap animation timers on the compositor task runner.

third_party/WebKit/Source/core/loader/ImageLoader.cpp

Index: third_party/WebKit/Source/core/loader/ImageLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/ImageLoader.cpp b/third_party/WebKit/Source/core/loader/ImageLoader.cpp
index fd04befc8bacbc2a73a180daef58970be00342f1..d0080d7d1620d503bc112689f8000ca8e5827d75 100644
--- a/third_party/WebKit/Source/core/loader/ImageLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/ImageLoader.cpp
@@ -31,6 +31,7 @@
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/IncrementLoadEventDelayCount.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/events/Event.h"
 #include "core/events/EventSender.h"
 #include "core/frame/LocalFrame.h"
@@ -321,7 +322,11 @@ void ImageLoader::DoUpdateFromElement(BypassMainWorldBehavior bypass_behavior,
       params.SetAllowImagePlaceholder();
     }
 
-    new_image = ImageResourceContent::Fetch(params, document.Fetcher());
+    RefPtr<WebTaskRunner> task_runner = TaskRunnerHelper::Get(
+        TaskType::kAnimationTimer, &element_->GetDocument());
+
+    new_image =
+        ImageResourceContent::Fetch(task_runner, params, document.Fetcher());
 
     if (!new_image && !PageIsBeingDismissed(&document)) {
       CrossSiteOrCSPViolationOccurred(image_source_url);
@@ -400,7 +405,10 @@ void ImageLoader::UpdateFromElement(UpdateFromElementBehavior update_behavior,
   // funneling the main resource bytes into m_image, so just create an
   // ImageResource to be populated later.
   if (loading_image_document_ && update_behavior != kUpdateForcedReload) {
+    RefPtr<WebTaskRunner> task_runner = TaskRunnerHelper::Get(
+        TaskType::kAnimationTimer, &element_->GetDocument());
     ImageResource* image_resource = ImageResource::Create(
+        task_runner,
         ResourceRequest(ImageSourceToKURL(element_->ImageSourceURL())));
     image_resource->SetStatus(ResourceStatus::kPending);
     image_resource_for_image_document_ = image_resource;