[NTP4] Track the position of each app that's launched.

chrome/browser/ui/webui/metrics_handler.cc

 // Copyright (c) 2011 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/ui/webui/metrics_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 46 matching lines @@
   int int_value = static_cast<int>(value);
   int int_boundary_value = static_cast<int>(boundary_value);
   if (int_boundary_value >= 4000 ||
       int_value > int_boundary_value ||
       int_value < 0) {
     NOTREACHED();
     return;
   }
 
   int bucket_count = int_boundary_value;
-  while (bucket_count >= 100) {
+  while (bucket_count > 100) {
     bucket_count /= 10;
   }
 
   // As |histogram_name| may change between calls, the UMA_HISTOGRAM_ENUMERATION
   // macro cannot be used here.
   base::Histogram* counter =
       base::LinearHistogram::FactoryGet(
           histogram_name, 1, int_boundary_value, bucket_count + 1,
           base::Histogram::kUmaTargetedHistogramFlag);
   counter->Add(int_value);
@@ skipping 21 matching lines @@
     // The new tab page has finished loading; reset it.
     tab->SetNewTabStartTime(base::TimeTicks());
   } else {
     NOTREACHED();
   }
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_METRIC_EVENT_DURATION,
       content::Source<WebContents>(tab),
       content::Details<MetricEventDurationDetails>(&details));
 }