Add CDM FileIO tests.

chrome/test/data/media/encrypted_media_player.html

Index: chrome/test/data/media/encrypted_media_player.html
diff --git a/chrome/test/data/media/encrypted_media_player.html b/chrome/test/data/media/encrypted_media_player.html
index 2b16d51d20422f1a76c12e4cf7630432250fb8e8..377d6d4431128409cd31231adc0b759c1ce88fe2 100644
--- a/chrome/test/data/media/encrypted_media_player.html
+++ b/chrome/test/data/media/encrypted_media_player.html
@@ -20,6 +20,8 @@
           failTest('Key added event not received.');
         if (video.isHeartbeatExpected && !video.receivedHeartbeat)
           failTest('Heartbeat keymessage event not received.');
+        if (video.isCdmFileIOTestExpected && !video.cdmFileIOTestPassed)
+          failTest('CDM File IO test failed or test result not received.');
         video.removeEventListener('ended', failTest);
         installTitleEventHandler(video, 'ended');
         video.removeEventListener('timeupdate', onTimeUpdate);