base: Move PerfTimer out of test/ directory.

Reason: PerfTimer is used by production code, so it doesn't make sense to have
it as test only.

- Rename it to ElapsedTimer.
- Move into base namespace.
- Move into timer/ directory.

BUG=None
TEST=None, no functional change
R=brettw@chromium.org
TBR=grt@chromium.org # for chrome_frame

Review URL: https://codereview.chromium.org/24265005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225898 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 2 deletions

diff --git a/chrome/browser/chromeos/external_metrics.cc b/chrome/browser/chromeos/external_metrics.cc
index 55d0d3b..22088ed4 100644
--- a/chrome/browser/chromeos/external_metrics.cc
+++ b/chrome/browser/chromeos/external_metrics.cc
@@ -25,8 +25,8 @@
 #include "base/metrics/statistics_recorder.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/sys_info.h"
-#include "base/test/perftimer.h"
 #include "base/time/time.h"
+#include "base/timer/elapsed_timer.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/metrics/metrics_service.h"
 #include "content/public/browser/browser_thread.h"
@@ -384,7 +384,7 @@ void ExternalMetrics::CollectEvents() {
 }
 
 void ExternalMetrics::CollectEventsAndReschedule() {
-  PerfTimer timer;
+  base::ElapsedTimer timer;
   CollectEvents();
   UMA_HISTOGRAM_TIMES("UMA.CollectExternalEventsTime", timer.Elapsed());
   ScheduleCollector();