Introduce ViewRoot forwarding input/view events to native

ui/android/display_android_manager.cc

 // Copyright 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.
 
 #include "ui/android/display_android_manager.h"
 
 #include <jni.h>
 #include <map>
 
 #include "base/android/jni_android.h"
 #include "base/stl_util.h"
 #include "jni/DisplayAndroidManager_jni.h"
 #include "ui/android/screen_android.h"
+#include "ui/android/view_android.h"
 #include "ui/android/window_android.h"
 #include "ui/display/display.h"
 
 namespace ui {
 
 using base::android::AttachCurrentThread;
 using display::Display;
 using display::DisplayList;
 
 void SetScreenAndroid() {
@@ skipping 87 matching lines @@
 }
 
 void DisplayAndroidManager::SetPrimaryDisplayId(
     JNIEnv* env,
     const base::android::JavaParamRef<jobject>& jobject,
     jint sdkDisplayId) {
   primary_display_id_ = sdkDisplayId;
 }
 
 }  // namespace ui