Rebaseline fast/canvas/canvas-toDataURL-jpeg-maximum-quality.html

Attempt to rebaseline this test again to debug the rebaseline script
issue 570401.

TBR=wkorman
NOTRY=true
BUG=569919,570401

Review URL: https://codereview.chromium.org/1540793002

Cr-Commit-Position: refs/heads/master@{#366321}

third_party/WebKit/LayoutTests/TestExpectations

@@ -1278,7 +1278,7 @@ crbug.com/569919 compositing/color-matching/image-color-matching.html [ Failure
 crbug.com/569919 fast/canvas/canvas-toBlob-jpeg-maximum-quality.html [ Failure ]
 crbug.com/569919 fast/canvas/canvas-toBlob-jpeg-medium-quality.html [ Failure ]
 crbug.com/569919 fast/canvas/canvas-toBlob-webp-maximum-quality.html [ Failure ]
-crbug.com/569919 fast/canvas/canvas-toDataURL-jpeg-maximum-quality.html [ Failure ]
+crbug.com/569919 fast/canvas/canvas-toDataURL-jpeg-maximum-quality.html [ NeedsRebaseline ]
 crbug.com/570401 fast/canvas/canvas-shadow-source-in.html [ Failure ]
 crbug.com/570401 virtual/display_list_2d_canvas/fast/canvas/canvas-shadow-source-in.html [ Failure ]
 crbug.com/570401 compositing/overflow/updating-scrolling-content.html [ Failure ]