Schedule bitmap animation timers on the compositor task runner.

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

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 14 matching lines @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/loader/DocumentLoader.h"
 
 #include <memory>
 #include "core/dom/Document.h"
 #include "core/dom/DocumentParser.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/dom/WeakIdentifierMap.h"
 #include "core/events/Event.h"
 #include "core/frame/Deprecation.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/LocalFrameClient.h"
 #include "core/frame/Settings.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
@@ skipping 133 matching lines @@
 }
 
 const KURL& DocumentLoader::Url() const {
   return request_.Url();
 }
 
 Resource* DocumentLoader::StartPreload(Resource::Type type,
                                        FetchParameters& params) {
   Resource* resource = nullptr;
   switch (type) {
-    case Resource::kImage:
+    case Resource::kImage: {
       if (frame_ && frame_->GetSettings() &&
           frame_->GetSettings()->GetFetchImagePlaceholders()) {
         params.SetAllowImagePlaceholder();
       }
-      resource = ImageResource::Fetch(params, Fetcher());
-      break;
+      RefPtr<WebTaskRunner> task_runner =
+          TaskRunnerHelper::Get(TaskType::kAnimationTimer, frame_);
+      resource = ImageResource::Fetch(task_runner, params, Fetcher());
+    } break;

[Sami, 2017/04/27 17:38:17]

nit: keep the break inside the block.

[Dan Elphick, 2017/05/03 09:41:06]

Acknowledged.

     case Resource::kScript:
       resource = ScriptResource::Fetch(params, Fetcher());
       break;
     case Resource::kCSSStyleSheet:
       resource = CSSStyleSheetResource::Fetch(params, Fetcher());
       break;
     case Resource::kFont:
       resource = FontResource::Fetch(params, Fetcher());
       break;
     case Resource::kMedia:
@@ skipping 887 matching lines @@
                      InstallNewDocumentReason::kJavascriptURL,
                      kForceSynchronousParsing, KURL());
   if (!source.IsNull())
     writer_->AppendReplacingData(source);
   EndWriting();
 }
 
 DEFINE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 }  // namespace blink