Fix failures on content_browser tests on Windows 7.

chrome/browser/media/webrtc/webrtc_browsertest_base.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/webrtc_browsertest_base.h"
 
 #include <stddef.h>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 410 matching lines @@
 std::string WebRtcTestBase::GetStreamSize(
     content::WebContents* tab_contents,
     const std::string& video_element) const {
   std::string javascript =
       base::StringPrintf("getStreamSize('%s')", video_element.c_str());
   std::string result = ExecuteJavascript(javascript, tab_contents);
   EXPECT_TRUE(base::StartsWith(result, "ok-", base::CompareCase::SENSITIVE));
   return result.substr(3);
 }
 
-bool WebRtcTestBase::HasWebcamAvailableOnSystem(
-    content::WebContents* tab_contents) const {
-  std::string result =
-      ExecuteJavascript("hasVideoInputDeviceOnSystem();", tab_contents);
-  return result == "has-video-input-device";
-}
-
 bool WebRtcTestBase::OnWin8() const {
 #if defined(OS_WIN)
   return base::win::GetVersion() > base::win::VERSION_WIN7;
 #else
   return false;
 #endif
 }
 
 void WebRtcTestBase::OpenDatabase(content::WebContents* tab) const {
   EXPECT_EQ("ok-database-opened", ExecuteJavascript("openDatabase()", tab));
@@ skipping 21 matching lines @@
 void WebRtcTestBase::SetDefaultVideoCodec(
     content::WebContents* tab,
     const std::string& video_codec) const {
   EXPECT_EQ("ok-forced",
             ExecuteJavascript("forceVideoCodec('" + video_codec + "')", tab));
 }
 
 void WebRtcTestBase::EnableOpusDtx(content::WebContents* tab) const {
   EXPECT_EQ("ok-forced", ExecuteJavascript("forceOpusDtx()", tab));
 }