Add LOCAL_ prefix to non-UMA histogram macros.

net/disk_cache/blockfile/block_bitmaps_v3.cc

 // Copyright (c) 2012 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 "net/disk_cache/blockfile/block_bitmaps_v3.h"
 
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "net/disk_cache/blockfile/disk_format_base.h"
 #include "net/disk_cache/blockfile/trace.h"
@@ skipping 130 matching lines @@
         found = true;  // Make sure file 0 is not mistaken with a failure.
         break;
       }
       header_num = bitmaps_[header_num].NextFileId();
     } while (header_num);
 
     if (!found)
       header_num = -1;
   }
 
-  HISTOGRAM_TIMES("DiskCache.GetFileForNewBlock", TimeTicks::Now() - start);
+  LOCAL_HISTOGRAM_TIMES("DiskCache.GetFileForNewBlock",
+                        TimeTicks::Now() - start);
   return header_num;
 }
 
 // We are interested in the total number of blocks used by this file type, and
 // the max number of blocks that we can store (reported as the percentage of
 // used blocks). In order to find out the number of used blocks, we have to
 // substract the empty blocks from the total blocks for each file in the chain.
 void BlockBitmaps::GetFileStats(int index, int* used_count, int* load) {
   int max_blocks = 0;
   *used_count = 0;
   *load = 0;
   do {
     int capacity = bitmaps_[index].Capacity();
     int used = capacity - bitmaps_[index].EmptyBlocks();
     DCHECK_GE(used, 0);
 
     max_blocks += capacity;
     *used_count += used;
 
     index = bitmaps_[index].NextFileId();
   } while (index);
 
   if (max_blocks)
     *load = *used_count * 100 / max_blocks;
 }
 
 }  // namespace disk_cache