cc: Replace RasterBuffer::Acquire/ReleaseCanvas with Playback function.

cc/resources/bitmap_raster_worker_pool.cc

 // 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.
 
 #include "cc/resources/bitmap_raster_worker_pool.h"
 
 #include <algorithm>
 
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_argument.h"
 #include "base/strings/stringprintf.h"
 #include "cc/debug/traced_value.h"
+#include "cc/resources/picture_pile_impl.h"
 #include "cc/resources/raster_buffer.h"
 #include "cc/resources/resource.h"
 
 namespace cc {
 namespace {
 
 class RasterBufferImpl : public RasterBuffer {
  public:
   RasterBufferImpl(ResourceProvider* resource_provider,
                    const Resource* resource)
       : lock_(resource_provider, resource->id()) {}
 
   // Overridden from RasterBuffer:
-  virtual skia::RefPtr<SkCanvas> AcquireSkCanvas() override {
-    return skia::SharePtr(lock_.sk_canvas());
+  virtual void Playback(const PicturePileImpl* picture_pile,
+                        const gfx::Rect& rect,
+                        float scale,
+                        RenderingStatsInstrumentation* stats) override {
+    picture_pile->RasterToBitmap(lock_.sk_canvas(), rect, scale, stats);
   }
-  virtual void ReleaseSkCanvas(const skia::RefPtr<SkCanvas>& canvas) override {}
 
  private:
   ResourceProvider::ScopedWriteLockSoftware lock_;
 
   DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
 };
 
 }  // namespace
 
 // static
@@ skipping 152 matching lines @@
       new base::debug::TracedValue();
 
   state->BeginArray("tasks_pending");
   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set)
     state->AppendBoolean(raster_pending_[task_set]);
   state->EndArray();
   return state;
 }
 
 }  // namespace cc