Add LOCAL_ prefix to non-UMA histogram macros.

chrome/browser/thumbnails/simple_thumbnail_crop.cc

 // Copyright (c) 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/thumbnails/simple_thumbnail_crop.h"
 
 #include "base/metrics/histogram.h"
 #include "content/public/browser/browser_thread.h"
 #include "skia/ext/platform_canvas.h"
 #include "ui/gfx/color_utils.h"
@@ skipping 220 matching lines @@
   // any native platform resources that can't be refounted, so this issue does
   // not occur.
   //
   // Note that GetClippedBitmap() does extractSubset() but it won't copy
   // the pixels, hence we check result size == clipped_bitmap size here.
   if (clipped_bitmap.width() == result.width() &&
       clipped_bitmap.height() == result.height())
     clipped_bitmap.copyTo(&result, kN32_SkColorType);
 #endif
 
-  HISTOGRAM_TIMES(kThumbnailHistogramName,
-                  base::TimeTicks::Now() - begin_compute_thumbnail);
+  LOCAL_HISTOGRAM_TIMES(kThumbnailHistogramName,
+                        base::TimeTicks::Now() - begin_compute_thumbnail);
   return result;
 }
 
 } // namespace thumbnails