Add the DelegatingRenderer class with its initialize path.

cc/delegating_renderer.h

Index: cc/delegating_renderer.h
diff --git a/cc/delegating_renderer.h b/cc/delegating_renderer.h
new file mode 100644
index 0000000000000000000000000000000000000000..aa20354e467e0b1918aa176b1cad986e5ba29dd1
--- /dev/null
+++ b/cc/delegating_renderer.h
@@ -0,0 +1,87 @@
+ /*
+ * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CC_DELEGATING_RENDERER_H_
+#define CC_DELEGATING_RENDERER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "cc/cc_export.h"
+#include "cc/renderer.h"
+#include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
+
+namespace cc {
+
+class ResourceProvider;
+
+class CC_EXPORT DelegatingRenderer :
+    public Renderer,
+    public NON_EXPORTED_BASE(
+        WebKit::WebGraphicsContext3D::WebGraphicsContextLostCallback)
+{
+ public:
+  static scoped_ptr<DelegatingRenderer> Create(
+      RendererClient* client, ResourceProvider* resource_provider);
+  virtual ~DelegatingRenderer();
+
+  virtual const RendererCapabilities& capabilities() const OVERRIDE;
+
+  virtual void drawFrame(RenderPassList& render_passes_in_draw_order,
+                         RenderPassIdHashMap& render_passes_by_id) OVERRIDE;
+
+  virtual void finish() OVERRIDE {}
+
+  virtual bool swapBuffers() OVERRIDE;
+
+  virtual void getFramebufferPixels(void *pixels,
+                                    const gfx::Rect& rect) OVERRIDE;
+
+  virtual void receiveCompositorFrameAck(const CompositorFrameAck&) OVERRIDE;
+
+  virtual bool isContextLost() OVERRIDE;
+
+  virtual void setVisible(bool) OVERRIDE;
+
+  virtual void sendManagedMemoryStats(size_t bytes_visible,
+                                      size_t bytes_visible_and_nearby,
+                                      size_t bytes_allocated) OVERRIDE {}
+
+  // WebGraphicsContext3D::WebGraphicsContextLostCallback implementation.
+  virtual void onContextLost() OVERRIDE;
+
+private:
+  DelegatingRenderer(RendererClient* client,
+                     ResourceProvider* resource_provider);
+  bool Initialize();
+
+  ResourceProvider* resource_provider_;
+  RendererCapabilities capabilities_;
+  bool visible_;
+
+  DISALLOW_COPY_AND_ASSIGN(DelegatingRenderer);
+};
+
+}  // namespace cc
+
+#endif  // CC_DELEGATING_RENDERER_H_