Simplify ImageDocument checkerboard background styling

third_party/WebKit/LayoutTests/TestExpectations

Index: third_party/WebKit/LayoutTests/TestExpectations
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index 0f7b89d6bfc4605f81722f9e9b72240420c8c06f..2a417de71f27163cec29aca00fb18a885cd40258 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -1411,6 +1411,14 @@ crbug.com/490015 virtual/stable/http/tests/navigation/beacon-blob-with-non-simpl
 # This test fails with the stable release mode.
 crbug.com/490015 virtual/stable/http/tests/navigation/same-and-different-back.html [ Skip ]
 
+# https://codereview.chromium.org/2523513002/
+crbug.com/650455 images/exif-orientation-height-image-document.html [ NeedsRebaseline ]
+crbug.com/650455 images/huge-image-viewport-scale.html [ NeedsRebaseline ]
+crbug.com/650455 mhtml/image_document.mht [ NeedsRebaseline ]
+crbug.com/650455 mhtml/invalid-bad-boundary2.mht [ NeedsRebaseline ]
+crbug.com/650455 virtual/gpu-rasterization/images/exif-orientation-height-image-document.html [ NeedsRebaseline ]
+crbug.com/650455 virtual/gpu-rasterization/images/huge-image-viewport-scale.html [ NeedsRebaseline ]
+
 # These tests have different baselines on Linux Precise than Linux Trusty;
 # Linux Precise is being phased out, so until it's phased out, any tests
 # that have baselines that behave differently can be disabled.