Move some content url constants to /url.

chrome/renderer/extensions/chrome_extension_helper.cc

 // Copyright 2014 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/renderer/extensions/chrome_extension_helper.h"
 
 #include "base/strings/string16.h"
 #include "chrome/common/extensions/chrome_extension_messages.h"
 #include "chrome/renderer/web_apps.h"
 #include "content/public/common/url_constants.h"
@@ skipping 29 matching lines @@
     base::string16 error;
     web_apps::ParseWebAppFromWebDocument(
         render_view()->GetWebView()->mainFrame(), &app_info, &error);
   }
 
   // Prune out any data URLs in the set of icons.  The browser process expects
   // any icon with a data URL to have originated from a favicon.  We don't want
   // to decode arbitrary data URLs in the browser process.  See
   // http://b/issue?id=1162972
   for (size_t i = 0; i < app_info.icons.size(); ++i) {
-    if (app_info.icons[i].url.SchemeIs(content::kDataScheme)) {
+    if (app_info.icons[i].url.SchemeIs(url::kDataScheme)) {
       app_info.icons.erase(app_info.icons.begin() + i);
       --i;
     }
   }
 
   Send(new ChromeExtensionHostMsg_DidGetApplicationInfo(
       routing_id(), page_id, app_info));
 }
 
 }  // namespace extensions