rename ExtensionProvider and PlatformAppProvider class

chrome/browser/content_settings/host_content_settings_map.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.
 
 // Maps hostnames to custom content settings.  Written on the UI thread and read
 // on any thread.  One instance per profile.
 
 #ifndef CHROME_BROWSER_CONTENT_SETTINGS_HOST_CONTENT_SETTINGS_MAP_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_HOST_CONTENT_SETTINGS_MAP_H_
 
@@ skipping 21 matching lines @@
 
 class ExtensionService;
 class GURL;
 class PrefService;
 
 class HostContentSettingsMap
     : public content_settings::Observer,
       public base::RefCountedThreadSafe<HostContentSettingsMap> {
  public:
   enum ProviderType {
-    PLATFORM_APP_PROVIDER = 0,
+    INTERNAL_EXTENSION_PROVIDER = 0,
     POLICY_PROVIDER,
-    EXTENSION_PROVIDER,
+    CUSTOM_EXTENSION_PROVIDER,
     PREF_PROVIDER,
     DEFAULT_PROVIDER,
     NUM_PROVIDER_TYPES,
   };
 
   HostContentSettingsMap(PrefService* prefs,
                          bool incognito);
 
   // In some cases, the ExtensionService is not available at the time the
   // HostContentSettingsMap is constructed. In these cases, we register the
@@ skipping 172 matching lines @@
   // Content setting providers.
   ProviderMap content_settings_providers_;
 
   // Used around accesses to the following objects to guarantee thread safety.
   mutable base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(HostContentSettingsMap);
 };
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_HOST_CONTENT_SETTINGS_MAP_H_