cc: Do bitmap conversion for RasterBuffer in the worker thread.

cc/resources/rasterizer.h

 // 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.
 
 #ifndef CC_RESOURCES_RASTERIZER_H_
 #define CC_RESOURCES_RASTERIZER_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "cc/resources/resource_format.h"
 #include "cc/resources/task_graph_runner.h"
 
-class SkCanvas;
-
 namespace cc {
 class ImageDecodeTask;
 class RasterTask;
 class Resource;
 class RasterBuffer;
 
 class CC_EXPORT RasterizerTaskClient {
  public:
   virtual RasterBuffer* AcquireBufferForRaster(RasterTask* task) = 0;
   virtual void ReleaseBufferForRaster(RasterTask* task) = 0;
@@ skipping 44 matching lines @@
 
 class CC_EXPORT RasterTask : public RasterizerTask {
  public:
   typedef std::vector<scoped_refptr<RasterTask> > Vector;
 
   // Overridden from RasterizerTask:
   virtual RasterTask* AsRasterTask() OVERRIDE;
 
   const Resource* resource() const { return resource_; }
   const ImageDecodeTask::Vector& dependencies() const { return dependencies_; }
+  bool content_has_changed() const { return content_has_changed_; }

[reveman, 2014/08/13 19:19:49]

I don't think we need to add this. See my other comments.

[auygun, 2014/08/14 10:35:42]

Done.

 
  protected:
   RasterTask(const Resource* resource, ImageDecodeTask::Vector* dependencies);
   virtual ~RasterTask();
 
+  void set_content_has_changed(bool content_has_changed);
+
  private:
   const Resource* resource_;
   ImageDecodeTask::Vector dependencies_;
+  bool content_has_changed_;
 };
 
 class CC_EXPORT RasterizerClient {
  public:
   virtual bool ShouldForceTasksRequiredForActivationToComplete() const = 0;
   virtual void DidFinishRunningTasks() = 0;
   virtual void DidFinishRunningTasksRequiredForActivation() = 0;
 
  protected:
   virtual ~RasterizerClient() {}
@@ skipping 59 matching lines @@
   // Check for completed tasks and dispatch reply callbacks.
   virtual void CheckForCompletedTasks() = 0;
 
  protected:
   virtual ~Rasterizer() {}
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RASTERIZER_H_