Fix MockFileSystem.walk and add test.

third_party/WebKit/LayoutTests/W3CImportExpectations

Index: third_party/WebKit/LayoutTests/W3CImportExpectations
diff --git a/third_party/WebKit/LayoutTests/W3CImportExpectations b/third_party/WebKit/LayoutTests/W3CImportExpectations
index 6394766ef6733e1ca24b4657718bb1ce19524499..6dccd6f4058119eb84f6b460f51a34dcf2beed6b 100644
--- a/third_party/WebKit/LayoutTests/W3CImportExpectations
+++ b/third_party/WebKit/LayoutTests/W3CImportExpectations
@@ -312,29 +312,30 @@ imported/wpt/websockets [ Skip ]
 imported/wpt/webvtt [ Skip ]
 imported/wpt/workers [ Skip ]
 
+## Owners: raikiri@google.com
 # Skip OWNERS files in web-platform-tests. crbug.com/584660
-imported/wpt/user-timing/OWNERS [ Skip ]
-imported/wpt/common/OWNERS [ Skip ]
-imported/wpt/custom-elements/OWNERS [ Skip ]
-imported/wpt/gamepad/OWNERS [ Skip ]
-imported/wpt/FileAPI/OWNERS [ Skip ]
-imported/wpt/html/OWNERS [ Skip ]
-imported/wpt/images/OWNERS [ Skip ]
-imported/wpt/webrtc/OWNERS [ Skip ]
-imported/wpt/html-imports/OWNERS [ Skip ]
-imported/wpt/IndexedDB/OWNERS [ Skip ]
-imported/wpt/dom/OWNERS [ Skip ]
-imported/wpt/shadow-dom/OWNERS [ Skip ]
-imported/wpt/encoding/OWNERS [ Skip ]
-imported/wpt/hr-time/OWNERS [ Skip ]
-imported/wpt/pointerevents/OWNERS [ Skip ]
-imported/wpt/webstorage/OWNERS [ Skip ]
-imported/wpt/mediacapture-streams/OWNERS [ Skip ]
-imported/wpt/media/OWNERS [ Skip ]
-imported/wpt/touch-events/OWNERS [ Skip ]
-imported/wpt/uievents/OWNERS [ Skip ]
-imported/wpt/web-animations/OWNERS [ Skip ]
-imported/wpt/quirks-mode/OWNERS [ Skip ]
+#imported/wpt/user-timing/OWNERS [ Pass ]
+#imported/wpt/common/OWNERS [ Pass ]
+#imported/wpt/custom-elements/OWNERS [ Pass ]
+#imported/wpt/gamepad/OWNERS [ Pass ]
+#imported/wpt/FileAPI/OWNERS [ Pass ]
+#imported/wpt/html/OWNERS [ Pass ]
+#imported/wpt/images/OWNERS [ Pass ]
+#imported/wpt/webrtc/OWNERS [ Pass ]
+#imported/wpt/html-imports/OWNERS [ Pass ]
+#imported/wpt/IndexedDB/OWNERS [ Pass ]
+#imported/wpt/dom/OWNERS [ Pass ]
+#imported/wpt/shadow-dom/OWNERS [ Pass ]
+#imported/wpt/encoding/OWNERS [ Pass ]
+#imported/wpt/hr-time/OWNERS [ Pass ]
+#imported/wpt/pointerevents/OWNERS [ Pass ]
+#imported/wpt/webstorage/OWNERS [ Pass ]
+#imported/wpt/mediacapture-streams/OWNERS [ Pass ]
+#imported/wpt/media/OWNERS [ Pass ]
+#imported/wpt/touch-events/OWNERS [ Pass ]
+#imported/wpt/uievents/OWNERS [ Pass ]
+#imported/wpt/web-animations/OWNERS [ Pass ]
+#imported/wpt/quirks-mode/OWNERS [ Pass ]

[qyearsley, 2016/06/02 14:24:38]

This whole section can just be deleted from the file.

The reason why some lines have been commented out and have an "Owner" comment
listed above is to indicate who is responsible for which tests that are
imported.

 
 # Exceptions for individual files that fail due to bugs in the
 # upstream tests that we shouldn't bother importing until they are