Introduce ViewRoot forwarding input/view events to native

ui/android/display_android_manager.cc

Index: ui/android/display_android_manager.cc
diff --git a/ui/android/display_android_manager.cc b/ui/android/display_android_manager.cc
index 50e5552f3b98e3db54ffb058197d496c51b3e216..d21448e4901d541d20a7379f53dcd75e097e6575 100644
--- a/ui/android/display_android_manager.cc
+++ b/ui/android/display_android_manager.cc
@@ -39,11 +39,8 @@ DisplayAndroidManager::DisplayAndroidManager() {}
 
 DisplayAndroidManager::~DisplayAndroidManager() {}
 
-// Screen interface.
-
-Display DisplayAndroidManager::GetDisplayNearestWindow(
-    gfx::NativeView view) const {
-  ui::WindowAndroid* window = view ? view->GetWindowAndroid() : nullptr;
+Display DisplayAndroidManager::GetDisplayNearestWindowAndroid(
+      gfx::NativeWindow window) const {
   if (window) {
     DisplayList::Displays::const_iterator it =
         display_list().FindDisplayById(window->display_id());
@@ -54,6 +51,14 @@ Display DisplayAndroidManager::GetDisplayNearestWindow(
   return GetPrimaryDisplay();
 }
 
+// Screen interface.
+
+Display DisplayAndroidManager::GetDisplayNearestWindow(
+    gfx::NativeView view) const {
+  ui::WindowAndroid* window = view ? view->GetWindowAndroid() : nullptr;
+  return GetDisplayNearestWindowAndroid(window);
+}
+
 // There is no notion of relative display positions on Android.
 Display DisplayAndroidManager::GetDisplayNearestPoint(
     const gfx::Point& point) const {