Introduced base class for WebRTC browser tests, cleaned up duplication.

chrome/browser/media/webrtc_browsertest_common.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 "chrome/browser/media/webrtc_browsertest_common.h"
 
-#include "base/file_util.h"
 #include "base/path_service.h"
-#include "base/process_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/test_timeouts.h"
 #include "base/time/time.h"
-#include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/infobars/infobar.h"
-#include "chrome/browser/infobars/infobar_service.h"
-#include "chrome/browser/media/media_stream_infobar_delegate.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
-#include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/common/chrome_switches.h"
-#include "chrome/test/base/in_process_browser_test.h"
-#include "chrome/test/base/ui_test_utils.h"
-#include "chrome/test/ui/ui_test.h"
-#include "content/public/browser/notification_service.h"
 #include "content/public/test/browser_test_utils.h"
-#include "net/test/embedded_test_server/embedded_test_server.h"
 
 const int kDefaultPollIntervalMsec = 250;
 
 bool SleepInJavascript(content::WebContents* tab_contents, int timeout_msec) {
   const std::string javascript = base::StringPrintf(
       "setTimeout(function() {"
       "  window.domAutomationController.send('sleep-ok');"
       "}, %d)", timeout_msec);
 
   std::string result;
@@ skipping 33 matching lines @@
       // TODO(phoglund): Figure out why this fails every now and then.
       // It's not a huge deal if it does though.
       LOG(ERROR) << "Failed to sleep.";
     }
   }
   LOG(ERROR) << "Timed out while waiting for " << javascript <<
       " to evaluate to " << evaluates_to << "; last result was '" << result <<
       "'";
   return false;
 }