content: Move kViewSourceScheme constant into content namespace.

chrome/browser/ui/singleton_tabs.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/ui/singleton_tabs.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 79 matching lines @@
   int tab_count = params->browser->tab_strip_model()->count();
   for (int i = 0; i < tab_count; ++i) {
     int tab_index = (start_index + i) % tab_count;
     content::WebContents* tab =
         params->browser->tab_strip_model()->GetWebContentsAt(tab_index);
 
     GURL tab_url = tab->GetURL();
 
     // Skip view-source tabs. This is needed because RewriteURLIfNecessary
     // removes the "view-source:" scheme which leads to incorrect matching.
-    if (tab_url.SchemeIs(chrome::kViewSourceScheme))
+    if (tab_url.SchemeIs(content::kViewSourceScheme))
       continue;
 
     GURL rewritten_tab_url = tab_url;
     content::BrowserURLHandler::GetInstance()->RewriteURLIfNecessary(
       &rewritten_tab_url,
       params->browser->profile(),
       &reverse_on_redirect);
 
     url_canon::Replacements<char> replacements;
     if (params->ref_behavior == NavigateParams::IGNORE_REF)
@@ skipping 10 matching lines @@
                                     replacements)) {
       params->target_contents = tab;
       return tab_index;
     }
   }
 
   return -1;
 }
 
 }  // namespace chrome