Introduce ViewRoot forwarding input/view events to native

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 <memory>
 
 #include "base/android/jni_weak_ref.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/android/compositor_client.h"
 #include "ui/gfx/native_widget_types.h"
 
+namespace ui {
+class ViewRoot;
+}
+
 namespace content {
 class Compositor;
 
 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);
+                        ui::ViewRoot* view_root_);
 
   // Methods called from Java via JNI -----------------------------------------
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void SetCurrentWebContents(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj,
       const base::android::JavaParamRef<jobject>& jweb_contents);
   void SurfaceCreated(JNIEnv* env,
                       const base::android::JavaParamRef<jobject>& obj);
   void SurfaceDestroyed(JNIEnv* env,
@@ skipping 14 matching lines @@
 
  private:
   ~ContentViewRenderView() override;
 
   void InitCompositor();
 
   base::android::ScopedJavaGlobalRef<jobject> java_obj_;
 
   std::unique_ptr<content::Compositor> compositor_;
 
-  gfx::NativeWindow root_window_;
+  ui::ViewRoot* view_root_;
   int current_surface_format_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentViewRenderView);
 };
 
 
 
 }
 
 #endif  // CONTENT_BROWSER_ANDROID_CONTENT_VIEW_RENDER_VIEW_H_