Fix pixel snapping issues when layers become composited

LayoutTests/TestExpectations

Index: LayoutTests/TestExpectations
diff --git a/LayoutTests/TestExpectations b/LayoutTests/TestExpectations
index b18a50d8add63898b57b580c3de0f3c5ed1c9374..bf2cbda37fded59aed71cafad63e8a5c94fc9e8a 100644
--- a/LayoutTests/TestExpectations
+++ b/LayoutTests/TestExpectations
@@ -1274,7 +1274,6 @@ crbug.com/237250 [ SnowLeopard Debug ] media/video-set-rate-from-pause.html [ Cr
 crbug.com/237270 [ Win7 ] transforms/2d/transform-2d.html [ Pass Timeout ]
 crbug.com/237270 [ Debug ] fast/dom/SelectorAPI/resig-SelectorsAPI-test.xhtml [ Slow ]
 
-crbug.com/237270 [ Debug ] fast/sub-pixel/transformed-iframe-copy-on-scroll.html [ Pass Timeout ]
 crbug.com/251129 [ Linux Win Debug ] http/tests/history/redirect-js-form-submit-0-seconds.html [ Failure Pass ]
 
 # Gets a "Maximum call stack size exceeded" exception in debug that doesn't happen in release.
@@ -1608,6 +1607,14 @@ crbug.com/247889 [ Win ] http/tests/navigation/back-send-referrer.html [ Pass Ti
 Bug(jamesr) compositing/video/video-controls-layer-creation.html [ ImageOnlyFailure Pass ]
 Bug(jamesr) virtual/softwarecompositing/video/video-controls-layer-creation.html [ ImageOnlyFailure Pass ]
 
+Bug(leviw) compositing/direct-image-compositing.html [ NeedsRebaseline ]
+Bug(leviw) css3/filters/effect-reference-zoom.html [ NeedsRebaseline ]
+Bug(leviw) css3/filters/filter-repaint-blur.html [ NeedsRebaseline ]
+Bug(leviw) css3/filters/filter-repaint-child-layers.html [ NeedsRebaseline ]
+Bug(leviw) css3/filters/filter-repaint-shadow.html [ NeedsRebaseline ]
+Bug(leviw) css3/filters/nested-filter.html [ NeedsRebaseline ]
+Bug(leviw) fast/sub-pixel/transformed-iframe-copy-on-scroll.html [ NeedsManualRebaseline ]
+
 # New baseline might fail on Mac according to trybots.
 crbug.com/245520 [ Mac ] compositing/repaint/transform-style-change.html [ ImageOnlyFailure ]