Change histogram.h includes to histogram_macros.h in components/

components/precache/core/precache_database.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 "components/precache/core/precache_database.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/location.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "sql/connection.h"
 #include "sql/transaction.h"
 #include "url/gurl.h"
 
 namespace {
 
 // The number of days old that an entry in the precache URL table can be before
@@ skipping 202 matching lines @@
   // database writes can be buffered up and flushed together in the same
   // transaction.
   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE, base::Bind(&PrecacheDatabase::PostedFlush,
                             scoped_refptr<PrecacheDatabase>(this)),
       base::TimeDelta::FromSeconds(1));
   is_flush_posted_ = true;
 }
 
 }  // namespace precache