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

content/browser/frame_host/render_frame_host_impl.cc

 // 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.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 251 matching lines @@
      const base::string16& javascript,
      const JavaScriptResultCallback& callback) {
   static int next_id = 1;
   int key = next_id++;
   Send(new FrameMsg_JavaScriptExecuteRequest(routing_id_,
                                              javascript,
                                              key, true));
   javascript_callbacks_.insert(std::make_pair(key, callback));
 }
 
+void RenderFrameHostImpl::ExecuteJavaScriptForTests(
+    const base::string16& javascript) {
+  Send(new FrameMsg_JavaScriptExecuteRequestForTests(routing_id_,
+                                                     javascript,
+                                                     0, false));
+}
+
 RenderViewHost* RenderFrameHostImpl::GetRenderViewHost() {
   return render_view_host_;
 }
 
 ServiceRegistry* RenderFrameHostImpl::GetServiceRegistry() {
   static_cast<RenderProcessHostImpl*>(GetProcess())->EnsureMojoActivated();
   return &service_registry_;
 }
 
 bool RenderFrameHostImpl::Send(IPC::Message* message) {
@@ skipping 1043 matching lines @@
   // Clear any state if a pending navigation is canceled or preempted.
   if (suspended_nav_params_)
     suspended_nav_params_.reset();
 
   TRACE_EVENT_ASYNC_END0("navigation",
                          "RenderFrameHostImpl navigation suspended", this);
   navigations_suspended_ = false;
 }
 
 }  // namespace content