[Extensions OOPI] Update app window bindings for OOPI

extensions/renderer/render_frame_observer_natives.h

 // 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.
 
-#ifndef EXTENSIONS_RENDERER_RENDER_VIEW_OBSERVER_NATIVES_H_
-#define EXTENSIONS_RENDERER_RENDER_VIEW_OBSERVER_NATIVES_H_
+#ifndef EXTENSIONS_RENDERER_RENDER_FRAME_OBSERVER_NATIVES_H_
+#define EXTENSIONS_RENDERER_RENDER_FRAME_OBSERVER_NATIVES_H_
 
 #include "extensions/renderer/object_backed_native_handler.h"
 
 namespace extensions {
 class ScriptContext;
 
-// Native functions for JS to run callbacks upon RenderView events.
-class RenderViewObserverNatives : public ObjectBackedNativeHandler {
+// Native functions for JS to run callbacks upon RenderFrame events.
+class RenderFrameObserverNatives : public ObjectBackedNativeHandler {
  public:
-  RenderViewObserverNatives(ScriptContext* context);
+  explicit RenderFrameObserverNatives(ScriptContext* context);
 
  private:
-  // Runs a callback upon creation of new document element inside a render view
+  // Runs a callback upon creation of new document element inside a render frame
   // (document.documentElement).
   void OnDocumentElementCreated(
       const v8::FunctionCallbackInfo<v8::Value>& args);
-  DISALLOW_COPY_AND_ASSIGN(RenderViewObserverNatives);
+
+  DISALLOW_COPY_AND_ASSIGN(RenderFrameObserverNatives);
 };
 
 }  // namespace extensions
 
-#endif  // EXTENSIONS_RENDERER_RENDER_VIEW_OBSERVER_NATIVES_H_
+#endif  // EXTENSIONS_RENDERER_RENDER_FRAME_OBSERVER_NATIVES_H_