Added MojoCompositorFrameSink::EvictFrame() and MojoCompositorFrameSinkClient::WillDrawSurface()

third_party/WebKit/Source/platform/graphics/OffscreenCanvasFrameDispatcherImpl.cpp

 // Copyright 2016 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 "platform/graphics/OffscreenCanvasFrameDispatcherImpl.h"
 
 #include "cc/output/compositor_frame.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "platform/CrossThreadFunctional.h"
@@ skipping 360 matching lines @@
 void OffscreenCanvasFrameDispatcherImpl::ReclaimResources(
     const cc::ReturnedResourceArray& resources) {
   for (const auto& resource : resources) {
     RefPtr<StaticBitmapImage> image = m_cachedImages.get(resource.id);
     if (image)
       image->updateSyncToken(resource.sync_token);
     reclaimResource(resource.id);
   }
 }
 
+void OffscreenCanvasFrameDispatcherImpl::WillDrawSurface() {
+  // TODO(fsamuel, staraz): Implement this.
+  NOTIMPLEMENTED();
+}
+
 void OffscreenCanvasFrameDispatcherImpl::reclaimResource(unsigned resourceId) {
   // An image resource needs to be returned by both the
   // CompositorFrameSink and the HTMLCanvasElement. These
   // events can happen in any order.  The first of the two
   // to return a given resource will result in the spare
   // resource lock being lifted, and the second will delete
   // the resource for real.
   if (m_spareResourceLocks.contains(resourceId)) {
     m_spareResourceLocks.remove(resourceId);
     return;
   }
   m_cachedImages.remove(resourceId);
   m_sharedBitmaps.remove(resourceId);
   m_cachedTextureIds.remove(resourceId);
 }
 
 bool OffscreenCanvasFrameDispatcherImpl::verifyImageSize(
     const IntSize imageSize) {
   if (imageSize.width() == m_width && imageSize.height() == m_height)
     return true;
   return false;
 }
 
 void OffscreenCanvasFrameDispatcherImpl::reshape(int width, int height) {
   m_width = width;
   m_height = height;
 }
 
 }  // namespace blink