Revert of OOPIF: Route keyboard events to focused frame in the browser process.

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 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/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 1572 matching lines @@
 void WebContentsImpl::ReplicatePageFocus(bool is_focused) {
   // Focus loss may occur while this WebContents is being destroyed.  Don't
   // send the message in this case, as the main frame's RenderFrameHost and
   // other state has already been cleared.
   if (is_being_destroyed_)
     return;
 
   frame_tree_.ReplicatePageFocus(is_focused);
 }
 
-RenderWidgetHostImpl* WebContentsImpl::GetFocusedRenderWidgetHost() {
-  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
-    return GetMainFrame()->GetRenderWidgetHost();
-
-  FrameTreeNode* focused_frame = frame_tree_.GetFocusedFrame();
-  if (!focused_frame)
-    return GetMainFrame()->GetRenderWidgetHost();
-
-  return RenderWidgetHostImpl::From(
-      focused_frame->current_frame_host()->GetView()->GetRenderWidgetHost());
-}
-
 void WebContentsImpl::EnterFullscreenMode(const GURL& origin) {
   // This method is being called to enter renderer-initiated fullscreen mode.
   // Make sure any existing fullscreen widget is shut down first.
   RenderWidgetHostView* const widget_view = GetFullscreenRenderWidgetHostView();
   if (widget_view)
     RenderWidgetHostImpl::From(widget_view->GetRenderWidgetHost())->Shutdown();
 
   if (delegate_)
     delegate_->EnterFullscreenModeForTab(this, origin);
 
@@ skipping 3047 matching lines @@
   return NULL;
 }
 
 void WebContentsImpl::SetForceDisableOverscrollContent(bool force_disable) {
   force_disable_overscroll_content_ = force_disable;
   if (view_)
     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
 }
 
 }  // namespace content