Make cssFloat an enumerable property of CSSStyleDeclaration

Make cssFloat an enumerable property of CSSStyleDeclaration

cssFloat does not show up as an enumerated property of 
CSSStyleDeclaration even though it does evaluate to a value. FF and 
IE both treat cssFloat as an enumerable property of CSSStyleDeclaration

BUG=492999
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=200965

[nainar1, 2015-08-20 01:42:19]

nainar@google.com changed reviewers:
+ nainar@google.com, timloh@chromium.org

[Timothy Loh, 2015-08-20 02:05:59]

On 2015/08/20 01:42:19, nainar wrote:

Is this just a copy of https://codereview.chromium.org/1113013002/? Same comment
as I had over there -- just implement these in the base class. Also run the
layout tests please, the other patch had several failures.

Description is weird (it should evaluate to whatever float is set to, not none).
Please wrap to 72 characters and comment on the behaviour of FF and IE. Also
double-check that this won't hit the CSSXGetComputedStyleQueries UseCounter.

[nainar1, 2015-08-21 00:47:54]

Fixed the patch according to your suggestions. Take a look please?
Thanks!

[Timothy Loh, 2015-08-21 02:50:53]

On 2015/08/21 00:47:54, nainar wrote:
> Fixed the patch according to your suggestions. Take a look please?
> Thanks!

lgtm

[nainar1, 2015-08-21 02:56:08]

The CQ bit was checked by nainar@google.com

[commit-bot: I haz the power, 2015-08-21 02:56:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1288623005/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1288623005/20001

[nainar1, 2015-08-21 02:56:35]

nainar@google.com changed reviewers:
- nainar@google.com

[commit-bot: I haz the power, 2015-08-21 05:34:53]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=200965