Remove the remaining automation-based tests.

chrome/browser/media/chrome_webrtc_typing_detection_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 <ctime>
 
 #include "base/path_service.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/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_paths.h"
 #include "chrome/test/base/ui_test_utils.h"
-#include "chrome/test/ui/ui_test.h"
 #include "content/public/test/browser_test_utils.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/perf/perf_test.h"
 
 static const base::FilePath::CharType kReferenceFile[] =
 #if defined (OS_WIN)
     FILE_PATH_LITERAL("pyauto_private/webrtc/human-voice-win.wav");
 #else
     FILE_PATH_LITERAL("pyauto_private/webrtc/human-voice-linux.wav");
 #endif
@@ skipping 112 matching lines @@
   // TODO(phoglund): simulate key presses, look for changes in typing detection
   // state.
   test::SleepInJavascript(left_tab, 10000);
 
   HangUp(left_tab);
   WaitUntilHangupVerified(left_tab);
   WaitUntilHangupVerified(right_tab);
 
   ASSERT_TRUE(peerconnection_server_.Stop());
 }