Convert uses of int ms to TimeDelta in chrome/test.

R=jbates@chromium.org
BUG=108171


Review URL: http://codereview.chromium.org/9584042

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124988 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/perf/rendering/throughput_tests.cc

@@ -190,7 +190,9 @@ class ThroughputTest : public BrowserPerfTest {
 
   void Wait(int ms) {
     MessageLoop::current()->PostDelayedTask(
-        FROM_HERE, MessageLoop::QuitClosure(), ms);
+        FROM_HERE,
+        MessageLoop::QuitClosure(),
+        base::TimeDelta::FromMilliseconds(ms));
     ui_test_utils::RunMessageLoop();
   }