Schedule bitmap animation timers on the compositor task runner.

third_party/WebKit/Source/core/css/CSSImageValue.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/css/CSSImageValue.h"
 
 #include "core/css/CSSMarkup.h"
 #include "core/dom/Document.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/frame/Settings.h"
 #include "core/loader/resource/ImageResourceContent.h"
 #include "core/style/StyleFetchedImage.h"
 #include "core/style/StyleInvalidImage.h"
 #include "platform/CrossOriginAttributeValue.h"
 #include "platform/loader/fetch/FetchInitiatorTypeNames.h"
 #include "platform/loader/fetch/FetchParameters.h"
 #include "platform/loader/fetch/ResourceFetcher.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SecurityPolicy.h"
@@ skipping 30 matching lines @@
                                                  : initiator_name_);
 
     if (cross_origin != kCrossOriginAttributeNotSet) {
       params.SetCrossOriginAccessControl(document.GetSecurityOrigin(),
                                          cross_origin);
     }
     if (document.GetSettings() &&
         document.GetSettings()->GetFetchImagePlaceholders())
       params.SetAllowImagePlaceholder();
 
-    if (ImageResourceContent* cached_image =
-            ImageResourceContent::Fetch(params, document.Fetcher())) {
+    RefPtr<WebTaskRunner> task_runner = TaskRunnerHelper::Get(
+        TaskType::kAnimationTimer, const_cast<Document*>(&document));

[Dan Elphick, 2017/04/27 14:41:39]

more const_cast here:(

+    if (ImageResourceContent* cached_image = ImageResourceContent::Fetch(
+            task_runner, params, document.Fetcher())) {
       cached_image_ =
           StyleFetchedImage::Create(cached_image, document, params.Url());
     } else {
       cached_image_ = StyleInvalidImage::Create(Url());
     }
   }
 
   return cached_image_.Get();
 }
 
@@ skipping 42 matching lines @@
 void CSSImageValue::ReResolveURL(const Document& document) const {
   KURL url = document.CompleteURL(relative_url_);
   AtomicString url_string(url.GetString());
   if (url_string == absolute_url_)
     return;
   absolute_url_ = url_string;
   cached_image_.Clear();
 }
 
 }  // namespace blink