Add layerTreeBuildHelper to control layer tree in ContentViewRenderView

content/browser/android/content_view_render_view.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_ANDROID_CONTENT_VIEW_RENDER_VIEW_H_
 #define CONTENT_BROWSER_ANDROID_CONTENT_VIEW_RENDER_VIEW_H_
 
 #include "base/android/jni_weak_ref.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/android/compositor_client.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace cc {
+class Layer;
+}
+
 namespace content {
 class Compositor;
+class LayerTreeBuildHelper;
 
 class ContentViewRenderView : public CompositorClient {
  public:
   // Registers the JNI methods for ContentViewRender.
   static bool RegisterContentViewRenderView(JNIEnv* env);
 
   ContentViewRenderView(JNIEnv* env,
                         jobject obj,
                         gfx::NativeWindow root_window);
 
   // Methods called from Java via JNI -----------------------------------------
   void Destroy(JNIEnv* env, jobject obj);
   void SetCurrentContentViewCore(JNIEnv* env, jobject obj,
                                  jlong native_content_view_core);
+  void SetLayerTreeBuildHelper(
+      JNIEnv* env, jobject obj, jlong native_build_helper);
   void SurfaceCreated(JNIEnv* env, jobject obj);
   void SurfaceDestroyed(JNIEnv* env, jobject obj);
   void SurfaceChanged(JNIEnv* env, jobject obj,
                       jint format, jint width, jint height, jobject surface);
   jboolean Composite(JNIEnv* env, jobject obj);
   jboolean CompositeToBitmap(JNIEnv* env, jobject obj, jobject java_bitmap);
   void SetOverlayVideoMode(JNIEnv* env, jobject obj, bool enabled);
 
   // CompositorClient ---------------------------------------------------------
   virtual void ScheduleComposite() OVERRIDE;
   virtual void OnSwapBuffersPosted() OVERRIDE;
   virtual void OnSwapBuffersCompleted() OVERRIDE;
 
  private:
   virtual ~ContentViewRenderView();
 
   void InitCompositor();
 
   bool buffers_swapped_during_composite_;
 
   base::android::ScopedJavaGlobalRef<jobject> java_obj_;
+  scoped_refptr<cc::Layer> root_layer_;
+  scoped_ptr<LayerTreeBuildHelper> layer_tree_build_helper_;
 
   scoped_ptr<content::Compositor> compositor_;
 
   gfx::NativeWindow root_window_;
   int current_surface_format_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewRenderView);
 };
 
 
 
 }
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_RENDER_VIEW_H_