Migrate chrome/browser files to histogram_macros.h includes.

chrome/browser/extensions/api/gcm/gcm_api.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 "chrome/browser/extensions/api/gcm/gcm_api.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/services/gcm/gcm_profile_service_factory.h"
 #include "chrome/common/extensions/api/gcm.h"
 #include "components/gcm_driver/common/gcm_messages.h"
 #include "components/gcm_driver/gcm_driver.h"
 #include "components/gcm_driver/gcm_profile_service.h"
 #include "extensions/browser/event_router.h"
@@ skipping 216 matching lines @@
   error.details.additional_properties = send_error_details.additional_data;
 
   std::unique_ptr<Event> event(
       new Event(events::GCM_ON_SEND_ERROR, api::gcm::OnSendError::kEventName,
                 api::gcm::OnSendError::Create(error), profile_));
   EventRouter::Get(profile_)
       ->DispatchEventToExtension(app_id, std::move(event));
 }
 
 }  // namespace extensions