Cleaned up WebRTC browser test js, removed unneeded stuff.

chrome/browser/media/chrome_webrtc_browsertest.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 "base/command_line.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/media/webrtc_browsertest_base.h"
 #include "chrome/browser/media/webrtc_browsertest_common.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
@@ skipping 32 matching lines @@
 
 static const bool kRunTestsWithFlag[] = { false, true };
 INSTANTIATE_TEST_CASE_P(WebRtcBrowserTests,
                         WebRtcBrowserTest,
                         testing::ValuesIn(kRunTestsWithFlag));
 
 IN_PROC_BROWSER_TEST_P(WebRtcBrowserTest,
                        MANUAL_RunsAudioVideoWebRTCCallInTwoTabs) {
   if (OnWinXp()) return;
 
+  ASSERT_TRUE(test::HasReferenceFilesInCheckout());
   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 
   content::WebContents* left_tab =
       OpenTestPageAndGetUserMediaInNewTab(kMainWebrtcTestHtmlPage);
   content::WebContents* right_tab =
       OpenTestPageAndGetUserMediaInNewTab(kMainWebrtcTestHtmlPage);
 
   SetupPeerconnectionWithLocalStream(left_tab);
   SetupPeerconnectionWithLocalStream(right_tab);
 
@@ skipping 18 matching lines @@
   GURL url(embedded_test_server()->GetURL("/webrtc/webaudio_crash.html"));
   ui_test_utils::NavigateToURL(browser(), url);
   content::WebContents* tab =
       browser()->tab_strip_model()->GetActiveWebContents();
 
   // A sleep is necessary to be able to detect the crash.
   test::SleepInJavascript(tab, 1000);
 
   ASSERT_FALSE(tab->IsCrashed());
 }