Introduce ViewRoot forwarding input/view events to native

chrome/browser/android/vr_shell/vr_shell.h

 // Copyright 2016 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 CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 #define CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_
 
 #include <jni.h>
 
 #include <memory>
@@ skipping 11 matching lines @@
 namespace base {
 class ListValue;
 class Thread;
 }
 
 namespace content {
 class WebContents;
 }
 
 namespace ui {
-class WindowAndroid;
+class ViewRoot;
 }
 
 namespace vr_shell {
 
 class UiInterface;
 class VrCompositor;
 class VrInputManager;
 class VrMetricsHelper;
 class VrShellDelegate;
 class VrWebContentsObserver;
 
 enum UiAction {
   HISTORY_BACK = 0,
   HISTORY_FORWARD,
   RELOAD,
   ZOOM_OUT,
   ZOOM_IN,
   RELOAD_UI
 };
 
 class VrMetricsHelper;
 
 // The native instance of the Java VrShell. This class is not threadsafe and
 // must only be used on the UI thread.
 class VrShell : public device::GvrDelegate, content::WebContentsObserver {
  public:
   VrShell(JNIEnv* env, jobject obj,
           content::WebContents* main_contents,
-          ui::WindowAndroid* content_window,
+          ui::ViewRoot* content_view_root,
           content::WebContents* ui_contents,
-          ui::WindowAndroid* ui_window,
+          ui::ViewRoot* ui_view_root,
           bool for_web_vr,
           VrShellDelegate* delegate,
           gvr_context* gvr_api,
           bool reprojected_rendering);
 
   void LoadUIContent(JNIEnv* env,
                      const base::android::JavaParamRef<jobject>& obj);
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
   void OnTriggerEvent(JNIEnv* env,
                       const base::android::JavaParamRef<jobject>& obj);
@@ skipping 96 matching lines @@
   base::WeakPtrFactory<VrShell> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VrShell);
 };
 
 bool RegisterVrShell(JNIEnv* env);
 
 }  // namespace vr_shell
 
 #endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_SHELL_H_