Implement CompositorCC::ReadPixels

ui/gfx/compositor/compositor_win.cc

 // Copyright (c) 2011 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 "ui/gfx/compositor/compositor.h"
 
 #include <algorithm>
 #include <d3dx10.h>
 #include <vector>
 
@@ skipping 87 matching lines @@
                          const gfx::Size& view_size);
 
   // Returns the index buffer used for drawing a texture.
   ID3D10Buffer* GetTextureIndexBuffer();
 
   // Compositor:
   virtual Texture* CreateTexture() OVERRIDE;
 
   virtual void Blur(const gfx::Rect& bounds) OVERRIDE;
 
-  virtual void ReadPixels(SkBitmap* bitmap) OVERRIDE;
+  virtual bool ReadPixels(SkBitmap* bitmap) OVERRIDE;
 
  protected:
   virtual void OnNotifyStart(bool clear) OVERRIDE;
   virtual void OnNotifyEnd() OVERRIDE;
   virtual void OnWidgetSizeChanged() OVERRIDE;
 
  private:
   enum Direction {
     HORIZONTAL,
     VERTICAL
@@ skipping 377 matching lines @@
 #if !defined(NDEBUG)
   // A warning is generated if a bound vertexbuffer is deleted. To avoid that
   // warning we reset the buffer here. We only do it for debug builds as it's
   // ok to effectively unbind the vertex buffer.
   vertex_buffer = vertex_buffer_.get();
   device_->IASetVertexBuffers(0, 1, &vertex_buffer, &stride, &offset);
   device_->IASetIndexBuffer(index_buffer_.get(), DXGI_FORMAT_R32_UINT, 0);
 #endif
 }
 
-void CompositorWin::ReadPixels(SkBitmap* bitmap) {
+bool CompositorWin::ReadPixels(SkBitmap* bitmap) {
   NOTIMPLEMENTED();
+  return false;
 }
 
 void CompositorWin::OnWidgetSizeChanged() {
   dest_render_target_view_ = NULL;
   depth_stencil_buffer_ = NULL;
   depth_stencil_view_ = NULL;
 
   main_render_target_view_ = NULL;
   main_texture_ = NULL;
   main_texture_shader_view_ = NULL;
@@ skipping 282 matching lines @@
 // static
 Compositor* Compositor::Create(CompositorDelegate* delegate,
                                gfx::AcceleratedWidget widget,
                                const gfx::Size& size) {
   CompositorWin* compositor = new CompositorWin(delegate, widget, size);
   compositor->Init();
   return compositor;
 }
 
 }  // namespace ui