Expose the CSS background-blend-mode property,

Expose the CSS background-blend-mode property,
part of the CSS Blending and Compositing spec.
The change consists of removing the property from under the
cssCompositing() runtime flag.

BUG=229615
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=167622

[mitica, 2014-02-21 16:20:24]

Hi guys,

As discussed on
https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/URCifA3WzBI,
I'd like to remove the background-blend-mode property from under the runtime
flag. Could you please have a look over this?
Thanks!

[eseidel, 2014-02-21 21:30:59]

If this is a separate runtime flag from other features, then the simplest way is
to just change its status to "stable":
http://blink.lc/blink/tree/Source/platform/RuntimeEnabledFeatures.in

That also gives you the most flexibility in case there is a last-minute security
bug found on stable or some such.

[mitica, 2014-02-21 22:24:53]

On 2014/02/21 21:30:59, eseidel wrote:
> If this is a separate runtime flag from other features, then the simplest way
is
> to just change its status to "stable":
> http://blink.lc/blink/tree/Source/platform/RuntimeEnabledFeatures.in
> 
> That also gives you the most flexibility in case there is a last-minute
security
> bug found on stable or some such.

Unfortunately, the CSSCompositing runtime flag also guards the mix-blend-mode
and isolation properties. This means that changing the status to stable is not
an option, since it would enable more than background blending.

[eseidel, 2014-02-21 22:37:24]

lgtm

OK.

[commit-bot: I haz the power, 2014-02-21 22:37:31]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mitica@adobe.com/174903002/1

[commit-bot: I haz the power, 2014-02-22 00:45:08]

Change committed as 167622