Don't take a fake UGI every time we execute Javascript.

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 <vector>
 
 #include "base/basictypes.h"
@@ skipping 498 matching lines @@
   void OnPasteAndMatchStyle();
   void OnDelete();
   void OnSelectAll();
   void OnSelectRange(const gfx::Point& start, const gfx::Point& end);
   void OnUnselect();
   void OnReplace(const base::string16& text);
   void OnReplaceMisspelling(const base::string16& text);
   void OnCSSInsertRequest(const std::string& css);
   void OnJavaScriptExecuteRequest(const base::string16& javascript,
                                   int id,
-                                  bool notify_result);
+                                  bool notify_result,
+                                  bool set_ugi_for_tests);
   void OnSetEditableSelectionOffsets(int start, int end);
   void OnSetCompositionFromExistingText(
       int start, int end,
       const std::vector<blink::WebCompositionUnderline>& underlines);
   void OnExtendSelectionAndDelete(int before, int after);
   void OnReload(bool ignore_cache);
   void OnTextSurroundingSelectionRequest(size_t max_length);
   void OnAddStyleSheetByURL(const std::string& url);
   void OnSetupTransitionView(const std::string& markup);
   void OnBeginExitTransition(const std::string& css_selector);
@@ skipping 203 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_