Suppress some layout test failures for upcoming Skia roll.

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 918da71907d24e15b50527475d29ffcaaaae3f8c..8442ce0760f748cbf52a934b9be3fbd2bc1c863f 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -2676,11 +2676,11 @@ crbug.com/697971 [ Mac10.12 ] virtual/gpu-rasterization/images/55.html [ Failure
 crbug.com/697971 [ Mac10.12 ] virtual/gpu-rasterization/images/color-profile-background-image-cross-fade-png.html [ Failure ]
 crbug.com/697971 [ Mac10.12 ] virtual/gpu-rasterization/images/color-profile-background-image-cross-fade.html [ Failure ]
 crbug.com/697971 [ Mac10.12 ] virtual/gpu-rasterization/images/color-profile-mask-image-svg.html [ Failure ]
-crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-arc-circumference-fill.html [ Failure ]
-crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-arc-circumference.html [ Failure ]
-crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-ellipse-circumference-fill.html [ Failure ]
-crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-ellipse-circumference.html [ Failure ]
-crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-incremental-repaint.html [ Failure ]
+#crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-arc-circumference-fill.html [ Failure ]
+#crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-arc-circumference.html [ Failure ]
+#crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-ellipse-circumference-fill.html [ Failure ]
+#crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-ellipse-circumference.html [ Failure ]
+#crbug.com/697971 [ Mac10.12 ] virtual/gpu/fast/canvas/canvas-incremental-repaint.html [ Failure ]
 crbug.com/697971 [ Mac10.12 ] virtual/mojo-loading/http/tests/filesystem/input-display.html [ Failure ]
 crbug.com/697971 [ Mac10.12 ] virtual/mojo-loading/http/tests/inspector-protocol/network-data-length.html [ Failure ]
 crbug.com/697971 [ Mac10.12 ] virtual/mojo-loading/http/tests/media/media-source/mediasource-is-type-supported.html [ Failure ]
@@ -2800,6 +2800,12 @@ crbug.com/660384 external/wpt/webmessaging/with-ports/001.html [ Failure ]
 crbug.com/660384 external/wpt/webmessaging/without-ports/001.html [ Failure ]
 crbug.com/673526 external/wpt/webmessaging/message-channels/close.html [ Failure ]
 
+crbug.com/642376 virtual/gpu/fast/canvas/canvas-arc-circumference-fill.html [ NeedsManualRebaseline ]
+crbug.com/642376 virtual/gpu/fast/canvas/canvas-arc-circumference.html [ NeedsManualRebaseline ]
+crbug.com/642376 virtual/gpu/fast/canvas/canvas-ellipse-circumference-fill.html [ NeedsManualRebaseline ]
+crbug.com/642376 virtual/gpu/fast/canvas/canvas-ellipse-circumference.html [ NeedsManualRebaseline ]
+crbug.com/642376 virtual/gpu/fast/canvas/canvas-incremental-repaint.html [ NeedsManualRebaseline ]
+
 # Added 2016-12-12
 crbug.com/610835 http/tests/security/XFrameOptions/x-frame-options-deny-multiple-clients.html [ Failure Pass ]
 crbug.com/610835 virtual/mojo-loading/http/tests/security/XFrameOptions/x-frame-options-deny-multiple-clients.html [ Failure Pass ]