Fixed how Apps Developer Tools is enabled/disabled

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index 01fabca9f20b96d4364c650723413a1406a0031f..941ae31a8c5d938dfb848cc1e7b10a3d924b0694 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -119,6 +119,7 @@ class ExtensionServiceInterface : public syncer::SyncableService {
   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;
@@ -377,6 +378,10 @@ class ExtensionService
       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();