Fixed how Apps Developer Tools is enabled/disabled

chrome/browser/extensions/extension_service.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_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 101 matching lines @@
   // themes sync to not use it directly.
   virtual void CheckForUpdatesSoon() = 0;
 
   virtual void AddExtension(const extensions::Extension* extension) = 0;
   virtual void AddComponentExtension(
       const extensions::Extension* extension) = 0;
 
   virtual void UnloadExtension(
       const std::string& extension_id,
       extension_misc::UnloadedExtensionReason reason) = 0;
+  virtual void RemoveComponentExtension(const std::string& extension_id) = 0;
 
   virtual void SyncExtensionChangeIfNeeded(
       const extensions::Extension& extension) = 0;
 
   virtual bool is_ready() = 0;
 
   // Returns task runner for crx installation file I/O operations.
   virtual base::SequencedTaskRunner* GetFileTaskRunner() = 0;
 };
 
@@ skipping 238 matching lines @@
       const extensions::Extension* extension);
 
   // Check for updates (or potentially new extensions from external providers)
   void CheckForExternalUpdates();
 
   // Unload the specified extension.
   virtual void UnloadExtension(
       const std::string& extension_id,
       extension_misc::UnloadedExtensionReason reason) OVERRIDE;
 
+  // Remove the specified component extension.
+  virtual void RemoveComponentExtension(const std::string& extension_id)
+      OVERRIDE;
+
   // Unload all extensions. This is currently only called on shutdown, and
   // does not send notifications.
   void UnloadAllExtensions();
 
   // Called only by testing.
   void ReloadExtensions();
 
   // Scan the extension directory and clean up the cruft.
   void GarbageCollectExtensions();
 
@@ skipping 571 matching lines @@
   syncer::SyncableService::StartSyncFlare flare_;
 
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsWithUnlimtedStorage);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            InstallAppsAndCheckStorageProtection);
   DISALLOW_COPY_AND_ASSIGN(ExtensionService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_H_