Expose mojo bindings to subframes in layout tests.

content/renderer/render_frame_impl.h

 // Copyright 2013 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_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 627 matching lines @@
   // TODO(creis): Remove when the only caller, the HistoryController, is no
   // more.
   void SetPendingNavigationParams(
       scoped_ptr<NavigationParams> navigation_params);
 
   media::MediaPermission* GetMediaPermission();
 
   // Sends the current frame's navigation state to the browser.
   void SendUpdateState();
 
-  // Creates a MojoBindingsController to allow WebUI documents to communicate
-  // with the browser process. If |for_layout_tests| is true, the module system
-  // is exposed on a global "mojo" object rather than "define".
-  void EnableMojoBindings(bool for_layout_tests);
+  // Creates a MojoBindingsController if Mojo bindings have been enabled for
+  // this frame. For WebUI, this allows the page to communicate with the browser
+  // process; for layout tests, this allows the test to mock out services at
+  // the Mojo IPC layer.
+  void MaybeEnableMojoBindings();
 
  protected:
   explicit RenderFrameImpl(const CreateParams& params);
 
  private:
   friend class RenderFrameImplTest;
   friend class RenderFrameObserver;
   friend class RendererAccessibilityTest;
   friend class TestRenderFrame;
   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuDisplayNoneTest, SelectItem);
@@ skipping 545 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_