Add LOCAL_ prefix to non-UMA histogram macros.

chrome/browser/sync_file_system/drive_backend/sync_engine.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/sync_file_system/drive_backend/sync_engine.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
@@ skipping 143 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(WorkerObserver);
 };
 
 namespace {
 
 void DidRegisterOrigin(const base::TimeTicks& start_time,
                        const SyncStatusCallback& callback,
                        SyncStatusCode status) {
   base::TimeDelta delta(base::TimeTicks::Now() - start_time);
-  HISTOGRAM_TIMES("SyncFileSystem.RegisterOriginTime", delta);
+  LOCAL_HISTOGRAM_TIMES("SyncFileSystem.RegisterOriginTime", delta);
   callback.Run(status);
 }
 
 template <typename T>
 void DeleteSoonHelper(scoped_ptr<T>) {}
 
 template <typename T>
 void DeleteSoon(const tracked_objects::Location& from_here,
                 base::TaskRunner* task_runner,
                 scoped_ptr<T> obj) {
@@ skipping 607 matching lines @@
 
 SyncStatusCallback SyncEngine::TrackCallback(
     const SyncStatusCallback& callback) {
   return callback_tracker_.Register(
       base::Bind(callback, SYNC_STATUS_ABORT),
       callback);
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system