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

content/browser/renderer_host/render_widget_host_delegate.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 "base/basictypes.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 
 namespace content {
 
 bool RenderWidgetHostDelegate::PreHandleKeyboardEvent(
@@ skipping 29 matching lines @@
 }
 #endif
 
 // If a delegate does not override this, the RenderWidgetHostView will
 // assume it is the sole platform event consumer.
 RenderWidgetHostInputEventRouter*
 RenderWidgetHostDelegate::GetInputEventRouter() {
   return nullptr;
 }
 
-// If a delegate does not override this, the RenderWidgetHostView will
-// assume its own RenderWidgetHost should consume keyboard events.
-RenderWidgetHostImpl* RenderWidgetHostDelegate::GetFocusedRenderWidgetHost() {
-  return nullptr;
-}
-
 }  // namespace content