Move ObserverList to base namespace.

extensions/browser/api/extensions_api_client.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_
 #define EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_
 
 #include <map>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "extensions/browser/api/declarative_content/content_rules_registry.h"
 #include "extensions/browser/api/storage/settings_namespace.h"
 
 class GURL;
 
+namespace base {
 template <class T>
 class ObserverListThreadSafe;
+}
 
 namespace content {
 class BrowserContext;
 class WebContents;
 }
 
 namespace extensions {
 
 class AppViewGuestDelegate;
 class ContentRulesRegistry;
@@ skipping 30 matching lines @@
   // Returns the single instance of |this|.
   static ExtensionsAPIClient* Get();
 
   // Storage API support.
 
   // Add any additional value store caches (e.g. for chrome.storage.managed)
   // to |caches|. By default adds nothing.
   virtual void AddAdditionalValueStoreCaches(
       content::BrowserContext* context,
       const scoped_refptr<SettingsStorageFactory>& factory,
-      const scoped_refptr<ObserverListThreadSafe<SettingsObserver> >& observers,
+      const scoped_refptr<base::ObserverListThreadSafe<SettingsObserver>>&
+          observers,
       std::map<settings_namespace::Namespace, ValueStoreCache*>* caches);
 
   // Creates the AppViewGuestDelegate.
   virtual AppViewGuestDelegate* CreateAppViewGuestDelegate() const;
 
   // Returns a delegate for ExtensionOptionsGuest. The caller owns the returned
   // ExtensionOptionsGuestDelegate.
   virtual ExtensionOptionsGuestDelegate* CreateExtensionOptionsGuestDelegate(
       ExtensionOptionsGuest* guest) const;
 
@@ skipping 38 matching lines @@
   // Creates a delegate for handling the management extension api.
   virtual ManagementAPIDelegate* CreateManagementAPIDelegate() const;
 
   // NOTE: If this interface gains too many methods (perhaps more than 20) it
   // should be split into one interface per API.
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_