Convert some pixel tests in fast/canvas into ref tests.

Convert some pixel tests in fast/canvas into ref tests.

This change removes many pixel baselines that were trivial enough
to be expressed as reference html. Some of the tests were slightly
modified to make them work as ref tests.

R=senorblanco@chromium.org
BUG=349536
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=168540

[Justin Novosad, 2014-03-05 19:06:17]

PTAL.  Bye bye pixels :-P

[Stephen White, 2014-03-05 21:29:32]

w00t! AWESOME!

LGTM (nits are at your discretion).

https://codereview.chromium.org/187393007/diff/1/LayoutTests/fast/canvas/canv...
File LayoutTests/fast/canvas/canvas-transform-skewed.html (right):

https://codereview.chromium.org/187393007/diff/1/LayoutTests/fast/canvas/canv...
LayoutTests/fast/canvas/canvas-transform-skewed.html:13: // ctx.fillRect(20, 10,
60, 30); Inset by 1 pixel to allow margin for numerical error.
Nit: please remove commented-out code.

https://codereview.chromium.org/187393007/diff/1/LayoutTests/fast/canvas/canv...
LayoutTests/fast/canvas/canvas-transform-skewed.html:16: // ctx.fillRect(40, 20,
20, 10); Outset by one pixel to allow margin for numerical error.
Same here.

https://codereview.chromium.org/187393007/diff/1/LayoutTests/fast/canvas/font...
File LayoutTests/fast/canvas/font-update.html (right):

https://codereview.chromium.org/187393007/diff/1/LayoutTests/fast/canvas/font...
LayoutTests/fast/canvas/font-update.html:18: }
Nit: weird formatting (not new to this patch). Could just get rid of the braces
now, actually.

https://codereview.chromium.org/187393007/diff/1/LayoutTests/fast/canvas/zero...
File LayoutTests/fast/canvas/zero-size-fill-rect.html (right):

https://codereview.chromium.org/187393007/diff/1/LayoutTests/fast/canvas/zero...
LayoutTests/fast/canvas/zero-size-fill-rect.html:13: testRunner.dumpAsText();
Nit: tab instead of spaces (not new to this patch).

[Justin Novosad, 2014-03-05 22:19:36]

Committed patchset #1 manually as r168540 (presubmit successful).

[Justin Novosad, 2014-03-05 22:21:12]

On 2014/03/05 22:19:36, junov wrote:
> Committed patchset #1 manually as r168540 (presubmit successful).

FYI Corrected all nits.