Mark fileapi_test/entry as flaky on chrome.

tests/html/html.status

Index: tests/html/html.status
diff --git a/tests/html/html.status b/tests/html/html.status
index c3df098b01df259e6e071c70d8170db1ada84f66..7f13644a0016d4bd9343acb318ef030b8872aa0e 100644
--- a/tests/html/html.status
+++ b/tests/html/html.status
@@ -78,9 +78,9 @@ native_gc_test: Pass, Slow
 worker_test/functional: Pass, Crash # Issue 9929.
 
 [ $compiler == dart2js && $runtime == chrome ]
-fileapi_test/entry: Fail # TODO(dart2js-team): Please triage this failure.
-fileapi_test/getDirectory: Fail # TODO(dart2js-team): Please triage this failure.
-fileapi_test/getFile: Fail # TODO(dart2js-team): Please triage this failure.
+fileapi_test/entry: Pass, Fail # Issue 20488
+fileapi_test/getDirectory: Fail # Issue 20488
+fileapi_test/getFile: Fail # Issue 20488
 media_stream_test/supported_MediaStreamEvent: RuntimeError # Please triage.
 media_stream_test/supported_MediaStreamTrackEvent: RuntimeError # Please triage.
 speechrecognition_test/types: RuntimeError # Please triage.
@@ -89,10 +89,10 @@ speechrecognition_test/types: RuntimeError # Please triage.
 crypto_test/functional: Pass, Slow # TODO(dart2js-team): Please triage this failure.
 input_element_test/supported_datetime-local: Pass, Slow # TODO(dart2js-team): Please triage this failure.
 
-fileapi_test/entry: Fail, Pass # TODO(dart2js-team): Please triage this failure.
-fileapi_test/fileEntry: Fail, Pass # TODO(dart2js-team): Please triage this failure.
-fileapi_test/getDirectory: Fail, Pass # TODO(dart2js-team): Please triage this failure.
-fileapi_test/getFile: Fail, Pass # TODO(dart2js-team): Please triage this failure.
+fileapi_test/entry: Fail, Pass # Issue 20488
+fileapi_test/fileEntry: Fail, Pass # Issue 20488
+fileapi_test/getDirectory: Fail, Pass # Issue 20488
+fileapi_test/getFile: Fail, Pass # Issue 20488
 
 audiocontext_test/supported: RuntimeError # TODO(dart2js-team): Please triage this failure.
 audiobuffersourcenode_test/supported: Fail # TODO(dart2js-team): Please triage this failure.