Cross-process frames should be notified of device scale factor changes.

content/browser/frame_host/cross_process_frame_connector.h

 // Copyright 2014 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_FRAME_HOST_CROSS_PROCESS_FRAME_CONNECTOR_H_
 #define CONTENT_BROWSER_FRAME_HOST_CROSS_PROCESS_FRAME_CONNECTOR_H_
 
 #include <stdint.h>
 
 #include "cc/output/compositor_frame.h"
 #include "content/browser/renderer_host/event_with_latency_info.h"
 #include "content/common/content_export.h"
 #include "content/common/input/input_event_ack_state.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace blink {
 class WebGestureEvent;
 class WebInputEvent;
-struct WebScreenInfo;
 }
 
 namespace cc {
 class SurfaceId;
 struct SurfaceSequence;
 }
 
 namespace IPC {
 class Message;
 }
@@ skipping 57 matching lines @@
 
   void RenderProcessGone();
 
   virtual void SetChildFrameSurface(const cc::SurfaceId& surface_id,
                                     const gfx::Size& frame_size,
                                     float scale_factor,
                                     const cc::SurfaceSequence& sequence);
 
   gfx::Rect ChildFrameRect();
   float device_scale_factor() const { return device_scale_factor_; }
-  void GetScreenInfo(blink::WebScreenInfo* results);
   void UpdateCursor(const WebCursor& cursor);
   gfx::Point TransformPointToRootCoordSpace(const gfx::Point& point,
                                             cc::SurfaceId surface_id);
   // Pass acked touch events to the root view for gesture processing.
   void ForwardProcessAckedTouchEvent(const TouchEventWithLatencyInfo& touch,
                                      InputEventAckState ack_result);
   // Gesture events with unused scroll deltas must be bubbled to ancestors
   // who may consume the delta.
   void BubbleScrollEvent(const blink::WebGestureEvent& event);
 
@@ skipping 43 matching lines @@
   gfx::Rect child_frame_rect_;
   float device_scale_factor_;
 
   bool is_scroll_bubbling_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_CROSS_PROCESS_FRAME_CONNECTOR_H_