[CSS Filters] Add V8 binding for WebKitCSSFilterValue

[Max Vujovic]

WebKitCSSFilterValue is not supported in V8CSSValueCustom::toV8. Let's add it.
(It is currently supported in JSCSSValueCustom::toJS).

This will fix many tests whose chromium expected result looks like:
FAIL subRule.operationType should be 12 (of type number). Was undefined (of type undefined).

It will make them pass like this:
PASS subRule.operationType is WebKitCSSFilterValue.CSS_FILTER_CUSTOM

[Max Vujovic]

Created attachment 154679 [details]
Patch

[Max Vujovic]

Thanks Adam!

[WebKit Review Bot]

Comment on attachment 154679 [details]
Patch

Rejecting attachment 154679 [details] from commit-queue.

Failed to run "['/mnt/git/webkit-commit-queue/Tools/Scripts/webkit-patch', '--status-host=queues.webkit.org', '-..." exit_code: 2

Last 500 characters of output:
webkit-commit-queue/Source/WebKit/chromium/webkit --revision 148290 --non-interactive --force --accept theirs-conflict --ignore-externals' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium'
48>At revision 148290.

________ running '/usr/bin/python tools/clang/scripts/update.py --mac-only' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium'

________ running '/usr/bin/python gyp_webkit' in '/mnt/git/webkit-commit-queue/Source/WebKit/chromium'
Updating webkit projects from gyp files...

Full output: http://queues.webkit.org/results/13368002

[Max Vujovic]

Created attachment 154737 [details]
Patch

Patch for landing. Fixed an OOPS in the ChangeLog.

[WebKit Review Bot]

Comment on attachment 154737 [details]
Patch

Clearing flags on attachment: 154737

Committed r123818: <http://trac.webkit.org/changeset/123818>

[WebKit Review Bot]

All reviewed patches have been landed.  Closing bug.