Preserve page-level focus for subframe cross-process navigations.

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 82 matching lines @@
   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);
 
+  // Determines whether the root RenderWidgetHostView (and thus the current
+  // page) has focus.
+  bool HasFocus();
+
  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);
@@ skipping 14 matching lines @@
   RenderWidgetHostViewChildFrame* view_;
 
   gfx::Rect child_frame_rect_;
   float device_scale_factor_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_CROSS_PROCESS_FRAME_CONNECTOR_H_