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

content/common/frame_messages.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.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/frame_message_enums.h"
@@ skipping 396 matching lines @@
 
 // Request for the renderer to execute JavaScript in the frame's context.
 //
 // javascript is the string containing the JavaScript to be executed in the
 // target frame's context.
 //
 // If the third parameter is true the result is sent back to the browser using
 // the message FrameHostMsg_JavaScriptExecuteResponse.
 // FrameHostMsg_JavaScriptExecuteResponse is passed the ID parameter so that the
 // host can uniquely identify the request.
-IPC_MESSAGE_ROUTED3(FrameMsg_JavaScriptExecuteRequest,
+IPC_MESSAGE_ROUTED4(FrameMsg_JavaScriptExecuteRequest,
                     base::string16,  /* javascript */
                     int,  /* ID */
-                    bool  /* if true, a reply is requested */)
+                    bool, /* if true, a reply is requested */
+                    bool  /* ONLY FOR TESTS:
+                             if true, a fake UserGestureIndicator is set */)
 
 // Selects between the given start and end offsets in the currently focused
 // editable field.
 IPC_MESSAGE_ROUTED2(FrameMsg_SetEditableSelectionOffsets,
                     int /* start */,
                     int /* end */)
 
 // Requests a navigation to the supplied markup, in an iframe with sandbox
 // attributes.
 IPC_MESSAGE_ROUTED1(FrameMsg_SetupTransitionView,
@@ skipping 328 matching lines @@
 IPC_MESSAGE_ROUTED0(FrameHostMsg_DidFirstVisuallyNonEmptyPaint)
 
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
 
 // Message to show/hide a popup menu using native controls.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_ShowPopup,
                     FrameHostMsg_ShowPopup_Params)
 IPC_MESSAGE_ROUTED0(FrameHostMsg_HidePopup)
 
 #endif