Adding compositor callbacks to RenderWidgetHostViewAndroid

content/browser/android/content_view_render_view.h

Index: content/browser/android/content_view_render_view.h
diff --git a/content/browser/android/content_view_render_view.h b/content/browser/android/content_view_render_view.h
index 714f02f7d328c10edf09d8902d8d7e5c4e8109e4..b2a0ea77912b66b5acc0e1c65877a3c429608d6c 100644
--- a/content/browser/android/content_view_render_view.h
+++ b/content/browser/android/content_view_render_view.h
@@ -24,6 +24,9 @@ class ContentViewRenderView : public CompositorClient {
   // Methods called from Java via JNI -----------------------------------------
   void Destroy(JNIEnv* env, jobject obj);
   void SetCurrentContentView(JNIEnv* env, jobject obj, int native_content_view);
+  void RemovePreviousContentView(JNIEnv* env,
+                                 jobject obj,
+                                 int native_content_view);
   void SurfaceCreated(JNIEnv* env, jobject obj, jobject jsurface);
   void SurfaceDestroyed(JNIEnv* env, jobject obj);
   void SurfaceSetSize(JNIEnv* env, jobject obj, jint width, jint height);