Correct the UMA histogram name

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"
 
 namespace ui {
 
@@ skipping 25 matching lines @@
   } else {
     if (event.GetAction() == MotionEvent::ACTION_UP && is_single_finger_) {
       UMA_HISTOGRAM_CUSTOM_COUNTS(
           "Event.TouchMaxDistance",
           static_cast<int>(sqrt(max_distance_from_start_squared_)),
           0,
           1500,
           50);
 
       base::TimeDelta duration = event.GetEventTime() - start_time_;
-      UMA_HISTOGRAM_TIMES("Event.TouchDuration2", duration);
+      UMA_HISTOGRAM_TIMES("Event.TouchDuration", duration);
     }
     is_single_finger_ = false;
   }
 }
 
 UMAEventType GestureTouchUMAHistogram::UMAEventTypeFromEvent(
     const GestureEventData& gesture) {
   switch (gesture.type()) {
     case ET_TOUCH_RELEASED:
       return UMA_ET_TOUCH_RELEASED;
@@ skipping 78 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