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

chrome/test/base/tracing_browsertest.cc

 // Copyright (c) 2012 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 "chrome/test/base/tracing.h"
 
 #include "base/debug/trace_event.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 10 matching lines @@
 using tracing::BeginTracingWithWatch;
 using tracing::WaitForWatchEvent;
 using tracing::EndTracing;
 
 const char* g_category = "test_tracing";
 const char* g_event = "TheEvent";
 
 class TracingBrowserTest : public InProcessBrowserTest {
  protected:
   // Execute some no-op javascript on the current tab - this triggers a trace
-  // event in RenderFrameImpl::OnJavaScriptExecuteRequest (from the renderer
-  // process).
+  // event in RenderFrameImpl::OnJavaScriptExecuteRequestForTests (from the
+  // renderer process).
   void ExecuteJavascriptOnCurrentTab() {
     content::RenderViewHost* rvh = browser()->tab_strip_model()->
         GetActiveWebContents()->GetRenderViewHost();
     ASSERT_TRUE(rvh);
     ASSERT_TRUE(content::ExecuteScript(rvh, ";"));
   }
 };
 
 void AddEvents(int num) {
   for (int i = 0; i < num; ++i)
@@ skipping 30 matching lines @@
   ASSERT_TRUE(EndTracing(&json_events));
 
   // Multi event after wait.
   ASSERT_TRUE(BeginTracingWithWatch(g_category, g_category, g_event, 5));
   base::MessageLoop::current()->PostTask(FROM_HERE, base::Bind(&AddEvents, 5));
   EXPECT_TRUE(WaitForWatchEvent(no_timeout));
   ASSERT_TRUE(EndTracing(&json_events));
 
   // Child process events from same process.
   ASSERT_TRUE(BeginTracingWithWatch(g_category, g_category,
-                                    "OnJavaScriptExecuteRequest", 2));
+                                    "OnJavaScriptExecuteRequestForTests", 2));
   ASSERT_NO_FATAL_FAILURE(ExecuteJavascriptOnCurrentTab());
   ASSERT_NO_FATAL_FAILURE(ExecuteJavascriptOnCurrentTab());
   EXPECT_TRUE(WaitForWatchEvent(no_timeout));
   ASSERT_TRUE(EndTracing(&json_events));
 
   // Child process events from different processes.
   GURL url1("chrome://tracing/");
   GURL url2("chrome://credits/");
   ASSERT_TRUE(BeginTracingWithWatch(g_category, g_category,
-                                    "OnJavaScriptExecuteRequest", 2));
+                                    "OnJavaScriptExecuteRequestForTests", 2));
   // Open two tabs to different URLs to encourage two separate renderer
   // processes. Each will fire an event that will be counted towards the total.
   ui_test_utils::NavigateToURLWithDisposition(browser(), url1,
       NEW_FOREGROUND_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   ASSERT_NO_FATAL_FAILURE(ExecuteJavascriptOnCurrentTab());
   ui_test_utils::NavigateToURLWithDisposition(browser(), url2,
       NEW_FOREGROUND_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   ASSERT_NO_FATAL_FAILURE(ExecuteJavascriptOnCurrentTab());
   EXPECT_TRUE(WaitForWatchEvent(no_timeout));
   ASSERT_TRUE(EndTracing(&json_events));
 }
 
 }  // namespace