Migrate chrome/browser files to histogram_macros.h includes.

chrome/browser/push_messaging/push_messaging_service_impl.cc

 // Copyright 2014 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 "chrome/browser/push_messaging/push_messaging_service_impl.h"
 
 #include <vector>
 
 #include "base/barrier_closure.h"
 #include "base/base64url.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/feature_list.h"
 #include "base/logging.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/permissions/permission_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/push_messaging/push_messaging_app_identifier.h"
 #include "chrome/browser/push_messaging/push_messaging_constants.h"
 #include "chrome/browser/push_messaging/push_messaging_service_factory.h"
 #include "chrome/browser/push_messaging/push_messaging_service_observer.h"
 #include "chrome/browser/services/gcm/gcm_profile_service_factory.h"
@@ skipping 771 matching lines @@
          blink::WebPushPermissionStatusGranted;
 }
 
 gcm::GCMDriver* PushMessagingServiceImpl::GetGCMDriver() const {
   gcm::GCMProfileService* gcm_profile_service =
       gcm::GCMProfileServiceFactory::GetForProfile(profile_);
   CHECK(gcm_profile_service);
   CHECK(gcm_profile_service->driver());
   return gcm_profile_service->driver();
 }