Revert of Add UMA to track app launcher discoverability.

chrome/browser/ui/app_list/app_list_service_mac.h

 // Copyright 2013 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_UI_APP_LIST_APP_LIST_SERVICE_MAC_H_
 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_SERVICE_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "apps/app_shim/app_shim_handler_mac.h"
@@ skipping 39 matching lines @@
 
   void ShowWindowNearDock();
   void WindowAnimationDidEnd();
 
   // AppListService overrides:
   virtual void Init(Profile* initial_profile) OVERRIDE;
   virtual void CreateForProfile(Profile* requested_profile) OVERRIDE;
   virtual void ShowForProfile(Profile* requested_profile) OVERRIDE;
   virtual void DismissAppList() OVERRIDE;
   virtual bool IsAppListVisible() const OVERRIDE;
-  virtual void EnableAppList(Profile* initial_profile,
-                             AppListEnableSource enable_source) OVERRIDE;
+  virtual void EnableAppList(Profile* initial_profile) OVERRIDE;
   virtual gfx::NativeWindow GetAppListWindow() OVERRIDE;
   virtual AppListControllerDelegate* GetControllerDelegate() OVERRIDE;
   virtual Profile* GetCurrentAppListProfile() OVERRIDE;
 
   // AppListServiceImpl overrides:
   virtual void CreateShortcut() OVERRIDE;
 
   // AppShimHandler overrides:
   virtual void OnShimLaunch(apps::AppShimHandler::Host* host,
                             apps::AppShimLaunchType launch_type,
@@ skipping 15 matching lines @@
   base::scoped_nsobject<AppListAnimationController> animation_controller_;
   base::scoped_nsobject<NSRunningApplication> previously_active_application_;
   NSPoint last_start_origin_;
   Profile* profile_;
   scoped_ptr<AppListControllerDelegateImpl> controller_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListServiceMac);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_SERVICE_MAC_H_