Convert the coordinates in WebInputEvent To Viewport in InputRouter

content/browser/renderer_host/input/input_router_impl.h

 // Copyright 2013 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_RENDERER_HOST_INPUT_INPUT_ROUTER_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_IMPL_H_
 
 #include <queue>
 
 #include "base/basictypes.h"
@@ skipping 50 matching lines @@
       const MouseWheelEventWithLatencyInfo& wheel_event) override;
   void SendKeyboardEvent(
       const NativeWebKeyboardEventWithLatencyInfo& key_event) override;
   void SendGestureEvent(
       const GestureEventWithLatencyInfo& gesture_event) override;
   void SendTouchEvent(const TouchEventWithLatencyInfo& touch_event) override;
   const NativeWebKeyboardEvent* GetLastKeyboardEvent() const override;
   void NotifySiteIsMobileOptimized(bool is_mobile_optimized) override;
   void RequestNotificationWhenFlushed() override;
   bool HasPendingEvents() const override;
+  void SetDeviceScaleFactor(float device_scale_factor) override;
 
   // IPC::Listener
   bool OnMessageReceived(const IPC::Message& message) override;
 
 private:
   friend class InputRouterImplTest;
 
   // TouchpadTapSuppressionControllerClient
   void SendMouseEventImmediately(
       const MouseEventWithLatencyInfo& mouse_event) override;
@@ skipping 163 matching lines @@
   // end notification is asynchronous, we use a count rather than a boolean
   // to avoid races in bookkeeping when starting a new fling.
   int active_renderer_fling_count_;
 
   TouchEventQueue touch_event_queue_;
   GestureEventQueue gesture_event_queue_;
   TouchActionFilter touch_action_filter_;
   InputEventStreamValidator input_stream_validator_;
   InputEventStreamValidator output_stream_validator_;
 
+  float device_scale_factor_;
+
   DISALLOW_COPY_AND_ASSIGN(InputRouterImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_INPUT_ROUTER_IMPL_H_