Allow out-of-process iframes to update the mouse cursor

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 "cc/output/compositor_frame.h"
 #include "content/common/content_export.h"
 #include "ui/gfx/geometry/rect.h"
@@ skipping 11 matching lines @@
 namespace IPC {
 class Message;
 }
 
 struct FrameHostMsg_CompositorFrameSwappedACK_Params;
 struct FrameHostMsg_ReclaimCompositorResources_Params;
 
 namespace content {
 class RenderFrameProxyHost;
 class RenderWidgetHostImpl;
+class RenderWidgetHostViewBase;
 class RenderWidgetHostViewChildFrame;
+class WebCursor;
 
 // CrossProcessFrameConnector provides the platform view abstraction for
 // RenderWidgetHostViewChildFrame allowing RWHVChildFrame to remain ignorant
 // of RenderFrameHost.
 //
 // The RenderWidgetHostView of an out-of-process child frame needs to
 // communicate with the RenderFrameProxyHost representing this frame in the
 // process of the parent frame. For example, assume you have this page:
 //
 //   -----------------
@@ skipping 46 matching lines @@
       int route_id,
       scoped_ptr<cc::CompositorFrame> frame);
   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);
 
  private:
   // Handlers for messages received from the parent frame.
   void OnCompositorFrameSwappedACK(
       const FrameHostMsg_CompositorFrameSwappedACK_Params& params);
   void OnReclaimCompositorResources(
       const FrameHostMsg_ReclaimCompositorResources_Params& params);
   void OnForwardInputEvent(const blink::WebInputEvent* event);
   void OnFrameRectChanged(const gfx::Rect& frame_rect);
   void OnInitializeChildFrame(gfx::Rect frame_rect, float scale_factor);
   void OnSatisfySequence(const cc::SurfaceSequence& sequence);
   void OnRequireSequence(const cc::SurfaceId& id,
                          const cc::SurfaceSequence& sequence);
 
   void SetDeviceScaleFactor(float scale_factor);
   void SetSize(gfx::Rect frame_rect);
 
+  // Retrieve the view for the top-level frame under the same WebContents.
+  RenderWidgetHostViewBase* GetRootRenderWidgetHostView();
+
   // The RenderFrameProxyHost that routes messages to the parent frame's
   // renderer process.
   RenderFrameProxyHost* frame_proxy_in_parent_renderer_;
 
   // The RenderWidgetHostView for the frame. Initially NULL.
   RenderWidgetHostViewChildFrame* view_;
 
   gfx::Rect child_frame_rect_;
   float device_scale_factor_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_CROSS_PROCESS_FRAME_CONNECTOR_H_