Fix EtwTraceConsumerDataTest fixture.

BUG=129129
TEST=The unittest no longer fails on trybots.

Review URL: https://chromiumcodereview.appspot.com/10407098

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138352 0039d316-1c4b-4281-b951-d872f2087c98

base/win/event_trace_consumer_unittest.cc

@@ -282,6 +282,8 @@ class EtwTraceConsumerDataTest: public EtwTraceConsumerBaseTest {
   }
 
   virtual void SetUp() {
+    EtwTraceConsumerBaseTest::SetUp();
+
     EtwTraceProperties prop;
     EtwTraceController::Stop(session_name_.c_str(), &prop);