Change includes of histogram.h to histogram_macros.h.

ui/events/gesture_detection/gesture_touch_uma_histogram.cc

 // Copyright 2014 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 "ui/events/gesture_detection/gesture_touch_uma_histogram.h"
 
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 
 namespace ui {
 
 GestureTouchUMAHistogram::GestureTouchUMAHistogram()
     : max_distance_from_start_squared_(0), is_single_finger_(true) {
 }
 
 GestureTouchUMAHistogram::~GestureTouchUMAHistogram() {
 }
 
@@ skipping 115 matching lines @@
       return UMA_ET_GESTURE_TAP_UNCONFIRMED;
     case ET_GESTURE_DOUBLE_TAP:
       return UMA_ET_GESTURE_DOUBLE_TAP;
     default:
       NOTREACHED();
       return UMA_ET_UNKNOWN;
   }
 }
 
 }  //  namespace ui