Add UMA to track app launcher discoverability.

chrome/browser/ui/app_list/app_list_service_disabled.cc

 // 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.
 
 #include "base/files/file_path.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 
 namespace {
 
@@ skipping 16 matching lines @@
 
   virtual base::FilePath GetProfilePath(
       const base::FilePath& user_data_dir) OVERRIDE {
     return base::FilePath();
   }
   virtual void SetProfilePath(const base::FilePath& profile_path) OVERRIDE {}
 
   virtual void Show() OVERRIDE {}
   virtual void CreateForProfile(Profile* profile) OVERRIDE {}
   virtual void ShowForProfile(Profile* profile) OVERRIDE {}
+  virtual void AutoShowForProfile(Profile* profile) OVERRIDE {}
   virtual void DismissAppList() OVERRIDE {}
 
   virtual Profile* GetCurrentAppListProfile() OVERRIDE { return NULL; }
   virtual bool IsAppListVisible() const OVERRIDE { return false; }
-  virtual void EnableAppList(Profile* initial_profile) OVERRIDE {}
-
+  virtual void EnableAppList(Profile* initial_profile,
+                             AppListEnableSource enable_source) OVERRIDE {}
   virtual AppListControllerDelegate* GetControllerDelegate() OVERRIDE {
     return NULL;
   }
 
   virtual gfx::NativeWindow GetAppListWindow() OVERRIDE {
     return NULL;
   }
 
   DISALLOW_COPY_AND_ASSIGN(AppListServiceDisabled);
 };
 
 }  // namespace
 
 // static
 AppListService* AppListService::Get(chrome::HostDesktopType desktop_type) {
   return AppListServiceDisabled::GetInstance();
 }
 
 // static
 void AppListService::InitAll(Profile* initial_profile) {}
 
 // static
 void AppListService::RegisterPrefs(PrefRegistrySimple* registry) {}
 
 // static
 void AppListService::RecordShowTimings(const CommandLine& command_line) {}