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

content/browser/frame_host/render_widget_host_view_child_frame.cc

 // 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.
 
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_factory.h"
 #include "cc/surfaces/surface_manager.h"
 #include "cc/surfaces/surface_sequence.h"
@@ skipping 55 matching lines @@
 }
 
 void RenderWidgetHostViewChildFrame::SetBounds(const gfx::Rect& rect) {
   SetSize(rect.size());
 }
 
 void RenderWidgetHostViewChildFrame::Focus() {
 }
 
 bool RenderWidgetHostViewChildFrame::HasFocus() const {
+  if (frame_connector_)
+    return frame_connector_->HasFocus();
   return false;
 }
 
 bool RenderWidgetHostViewChildFrame::IsSurfaceAvailableForCopy() const {
   NOTIMPLEMENTED();
   return false;
 }
 
 void RenderWidgetHostViewChildFrame::Show() {
   if (!host_->is_hidden())
@@ skipping 389 matching lines @@
       BrowserAccessibilityManager::GetEmptyDocument(), delegate);
 }
 
 void RenderWidgetHostViewChildFrame::ClearCompositorSurfaceIfNecessary() {
   if (surface_factory_ && !surface_id_.is_null())
     surface_factory_->Destroy(surface_id_);
   surface_id_ = cc::SurfaceId();
 }
 
 }  // namespace content