Remove unused EnableAdviewSrcAttribute command line flag.

chrome/browser/chrome_content_browser_client.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/browser/chrome_content_browser_client.h"
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 1515 matching lines @@
       switches::kAllowNaClFileHandleAPI,
       switches::kAppsCheckoutURL,
       switches::kAppsGalleryURL,
       switches::kCloudPrintServiceURL,
       switches::kDebugPrint,
       switches::kDisableBundledPpapiFlash,
       switches::kDisableExtensionsResourceWhitelist,
       switches::kDisablePnacl,
       switches::kDisableScriptedPrintThrottling,
       switches::kEnableAdview,
-      switches::kEnableAdviewSrcAttribute,
       switches::kEnableAppWindowControls,
       switches::kEnableBenchmarking,
       switches::kEnableNaCl,
       switches::kEnableNetBenchmarking,
       switches::kEnableStreamlinedHostedApps,
       switches::kEnableWatchdog,
       switches::kMemoryProfiling,
       switches::kMessageLoopHistogrammer,
       switches::kNoJsRandomness,
       switches::kOutOfProcessPdf,
@@ skipping 1124 matching lines @@
   // releases of Chrome. Permitting "Unknown" allows these APIs to be used on
   // Chromium builds as well.
   return channel <= chrome::VersionInfo::CHANNEL_DEV;
 #else
   return false;
 #endif
 }
 
 
 }  // namespace chrome