external metrics: change event file location

chrome/browser/chromeos/external_metrics.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 "chrome/browser/chromeos/external_metrics.h"
 
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 204 matching lines @@
   }
 
   // Do not use the UMA_HISTOGRAM_... macros here.  They cache the Histogram
   // instance and thus only work if |name| is constant.
   base::HistogramBase* counter = base::SparseHistogram::FactoryGet(
       name, base::HistogramBase::kUmaTargetedHistogramFlag);
   counter->Add(sample);
 }
 
 void ExternalMetrics::CollectEvents() {
-  const char* event_file_path = "/var/log/metrics/uma-events";
+  const char* event_file_path = "/var/run/metrics/uma-events";
   struct stat stat_buf;
   int result;
   if (!test_path_.empty()) {
     event_file_path = test_path_.value().c_str();
   }
   result = stat(event_file_path, &stat_buf);
   if (result < 0) {
     if (errno != ENOENT) {
       DPLOG(ERROR) << event_file_path << ": bad metrics file stat";
     }
@@ skipping 116 matching lines @@
 void ExternalMetrics::SetupFieldTrialsOnFileThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   // Field trials that do not read from files can be initialized in
   // ExternalMetrics::Start() above.
   SetupProgressiveScanFieldTrial();
 
   ScheduleCollector();
 }
 
 }  // namespace chromeos