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

content/browser/frame_host/cross_process_frame_connector.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/cross_process_frame_connector.h"
 
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "content/browser/compositor/surface_utils.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 152 matching lines @@
   if (rwhv)
     static_cast<RenderWidgetHostViewBase*>(rwhv)->GetScreenInfo(results);
 }
 
 void CrossProcessFrameConnector::UpdateCursor(const WebCursor& cursor) {
   RenderWidgetHostViewBase* root_view = GetRootRenderWidgetHostView();
   if (root_view)
     root_view->UpdateCursor(cursor);
 }
 
+bool CrossProcessFrameConnector::HasFocus() {
+  RenderWidgetHostViewBase* root_view = GetRootRenderWidgetHostView();
+  if (root_view)
+    return root_view->HasFocus();
+  return false;
+}
+
 void CrossProcessFrameConnector::OnForwardInputEvent(
     const blink::WebInputEvent* event) {
   if (!view_)
     return;
 
   RenderFrameHostManager* manager =
       frame_proxy_in_parent_renderer_->frame_tree_node()->render_manager();
   RenderWidgetHostImpl* parent_widget =
       manager->ForInnerDelegate()
           ? manager->GetOuterRenderWidgetHostForKeyboardInput()
@@ skipping 46 matching lines @@
 CrossProcessFrameConnector::GetRootRenderWidgetHostView() {
   return static_cast<RenderWidgetHostViewBase*>(
       frame_proxy_in_parent_renderer_->frame_tree_node()
           ->frame_tree()
           ->root()
           ->current_frame_host()
           ->GetView());
 }
 
 }  // namespace content