Add UMA for first app list paint on Windows.

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 {
 
 class AppListServiceDisabled : public AppListService {
  public:
   static AppListServiceDisabled* GetInstance() {
     return Singleton<AppListServiceDisabled,
                      LeakySingletonTraits<AppListServiceDisabled> >::get();
   }
 
  private:
   friend struct DefaultSingletonTraits<AppListServiceDisabled>;
 
   AppListServiceDisabled() {}
 
   // AppListService overrides:
+  virtual void SetAppListNextPaintCallback(
+      const base::Closure& callback) OVERRIDE {}
   virtual void HandleFirstRun() OVERRIDE {}
   virtual void Init(Profile* initial_profile) OVERRIDE {}
 
   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 {}
@@ skipping 24 matching lines @@
 }
 
 // static
 void AppListService::InitAll(Profile* initial_profile) {}
 
 // static
 void AppListService::RegisterPrefs(PrefRegistrySimple* registry) {}
 
 // static
 void AppListService::RecordShowTimings(const CommandLine& command_line) {}