More header cleanup:

chrome/browser/safe_browsing/safe_browsing_database_bloom.cc

 // Copyright (c) 2010 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/safe_browsing/safe_browsing_database_bloom.h"
 
 #include "base/auto_reset.h"
 #include "base/file_util.h"
+#include "base/histogram.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
 #include "base/sha2.h"
 #include "base/stats_counters.h"
 #include "chrome/browser/safe_browsing/bloom_filter.h"
 #include "chrome/common/sqlite_compiled_statement.h"
 #include "chrome/common/sqlite_utils.h"
 #include "googleurl/src/gurl.h"
 
 using base::Time;
@@ skipping 1371 matching lines @@
 }
 
 void SafeBrowsingDatabaseBloom::ClearUpdateCaches() {
   AutoLock lock(lookup_lock_);
   add_del_cache_.clear();
   sub_del_cache_.clear();
   add_chunk_cache_.clear();
   sub_chunk_cache_.clear();
   prefix_miss_cache_.clear();
 }