Unreviewed Chromium test expectations update.

        Delete a bunch of chromium-win specific baselines that were added by
        r68608. That was done because r68568 checked in failing expectations,
        but since Chromium was passing the tests with Skia, we wanted to keep
        passing them. However, the failing expectations were rolled out by
        r68737, so we no longer needed Chromium-specific expectations.

        Later, with r71481 we updated to a new version of the Philip test suite,
        which has a different output format, and the Chromium-specific
        expectations were out of date. Since they're not needed (we should pass
        with the base ones), they can just be deleted.

        * platform/chromium-mac/canvas/philip/tests/2d.drawImage.null-expected.txt: Removed.
        * platform/chromium-mac/canvas/philip/tests/2d.pattern.image.null-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.drawImage.null-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.gradient.radial.cone.front-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.gradient.radial.inside2-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.gradient.radial.inside3-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.gradient.radial.outside1-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.line.cap.closed-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.line.join.parallel-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.line.miter.lineedge-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.pattern.image.null-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.shadow.enable.x-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.shadow.enable.y-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/2d.strokeRect.zero.4-expected.txt: Removed.
        * platform/chromium-win/canvas/philip/tests/toDataURL.jpeg.alpha-expected.txt: Removed.
        * platform/chromium/test_expectations.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@73661 268f45cc-cd09-0410-ab3c-d52691b4dbfc