chrome: Use stl utilities from the base namespace

chrome/browser/extensions/extension_action.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 150 matching lines @@
   // Gets the visibility of |tab_id|.  Returns the first of: a specific
   // visibility set on the tab; a declarative visibility set on the tab; the
   // default visibility set for all tabs; or |false|.  Don't return this
   // result to an extension's background page because the declarative state can
   // leak information about hosts the extension doesn't have permission to
   // access.
   bool GetIsVisible(int tab_id) const {
     if (const bool* tab_is_visible = FindOrNull(&is_visible_, tab_id))
       return *tab_is_visible;
 
-    if (ContainsKey(declarative_show_count_, tab_id))
+    if (base::ContainsKey(declarative_show_count_, tab_id))
       return true;
 
     if (const bool* default_is_visible =
         FindOrNull(&is_visible_, kDefaultTabId))
       return *default_is_visible;
 
     return false;
   }
 
   // Remove all tab-specific state.
@@ skipping 120 matching lines @@
 };
 
 template<>
 struct ExtensionAction::ValueTraits<int> {
   static int CreateEmpty() {
     return -1;
   }
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_H_