Move PlatformContext3DImpl to separate file

chrome/renderer/pepper_platform_context_3d_impl.h

+// Copyright (c) 2010 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 "webkit/glue/plugins/pepper_plugin_delegate.h"
+
+#ifdef ENABLE_GPU
+
+namespace ggl {
+
+class Context;
+
+}  // namespace ggl;
+
+class PlatformContext3DImpl : public pepper::PluginDelegate::PlatformContext3D {
+ public:
+  explicit PlatformContext3DImpl(ggl::Context* parent_context);
+  virtual ~PlatformContext3DImpl();
+
+  virtual bool Init();
+  virtual bool SwapBuffers();
+  virtual unsigned GetError();
+  virtual void SetSwapBuffersCallback(Callback0::Type* callback);
+  void ResizeBackingTexture(const gfx::Size& size);
+  virtual unsigned GetBackingTextureId();
+  virtual gpu::gles2::GLES2Implementation* GetGLES2Implementation();
+
+ private:
+  ggl::Context* parent_context_;
+  ggl::Context* context_;
+};
+
+#endif  // ENABLE_GPU
+