Implement Main Thread RAF Aligned Input

content/renderer/render_view_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 #define CONTENT_RENDERER_RENDER_VIEW_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 221 matching lines @@
   double page_zoom_level() {
     return page_zoom_level_;
   }
 
   // Sets page-level focus in this view and notifies plugins and Blink's
   // FocusController.
   void SetFocus(bool enable);
 
   void AttachWebFrameWidget(blink::WebFrameWidget* frame_widget);
 
+  void NeedsMainFrame();
+
   // Plugin-related functions --------------------------------------------------
 
 #if defined(ENABLE_PLUGINS)
   // TODO(ekaramad): This method is only used by TextInputClientObserver.
   // Ideally, TextInputClientObserver should use RenderFrame/RenderWidget to
   // obtain the plugin. Come back to this later when implementing IME for Mac
   // to see if we can remove this API (https://crbug.com/578168).
   PepperPluginInstanceImpl* GetFocusedPepperPlugin();
 #endif  // ENABLE_PLUGINS
 
@@ skipping 668 matching lines @@
   // use the Observer interface to filter IPC messages and receive frame change
   // notifications.
   // ---------------------------------------------------------------------------
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_VIEW_IMPL_H_