Introduce ViewRoot to forward input/view events to native

content/browser/renderer_host/render_widget_host_view_android.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include <utility>
 
@@ skipping 703 matching lines @@
 gfx::Size RenderWidgetHostViewAndroid::GetPhysicalBackingSize() const {
   if (!content_view_core_) {
     if (default_bounds_.IsEmpty()) return gfx::Size();
 
     return gfx::Size(default_bounds_.right()
         * ui::GetScaleFactorForNativeView(GetNativeView()),
         default_bounds_.bottom()
         * ui::GetScaleFactorForNativeView(GetNativeView()));
   }
 
-  return content_view_core_->GetPhysicalBackingSize();
+  return view_.GetPhysicalBackingSize();
 }
 
 bool RenderWidgetHostViewAndroid::DoBrowserControlsShrinkBlinkSize() const {
   // Whether or not Blink's viewport size should be shrunk by the height of the
   // URL-bar.
   return content_view_core_ &&
          content_view_core_->DoBrowserControlsShrinkBlinkSize();
 }
 
 float RenderWidgetHostViewAndroid::GetTopControlsHeight() const {
@@ skipping 1259 matching lines @@
     case ui::MotionEvent::ACTION_UP:
     case ui::MotionEvent::ACTION_POINTER_UP:
       UMA_HISTOGRAM_CUSTOM_COUNTS("Event.Latency.OS.TOUCH_RELEASED",
                                   delta.InMicroseconds(), 1, 1000000, 50);
     default:
       return;
   }
 }
 
 }  // namespace content