bindings: Makes CSSRule inherit from ScriptWrappable.

bindings: Makes CSSRule inherit from ScriptWrappable.

Makes CSSRule and its subclasses inherit from ScriptWrappable.

Amongst top 10 mobile web sites, only one web site instantiates
only one instance of CSSRule unless Developer Tools is opened.
Most of web pages don't instantiate CSSRules and its subclasses
(unless Developer Tools is opened), so it should be okay to make
CSSRule inherit from ScriptWrappable, although it increases the
size of CSSRule by 4 or 8 bytes (= the size of v8::Persistent).

BUG=390065
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185166

[Yuki, 2014-11-11 06:59:49]

yukishiino@chromium.org changed reviewers:
+ haraken@chromium.org

[Yuki, 2014-11-11 06:59:50]

Could you review this CL?

[haraken, 2014-11-11 08:01:20]

haraken@chromium.org changed reviewers:
+ timloh@chromium.org

[haraken, 2014-11-11 08:01:20]

LGTM

timothy: Are you OK with this change? I guess it's OK to add 8 byte to CSSRule
since it's rarely used in the wide.

[Timothy Loh, 2014-11-11 17:31:57]

On 2014/11/11 08:01:20, haraken wrote:
> LGTM
> 
> timothy: Are you OK with this change? I guess it's OK to add 8 byte to CSSRule
> since it's rarely used in the wide.

lgtm

[Yuki, 2014-11-12 02:00:39]

The CQ bit was checked by yukishiino@chromium.org

[commit-bot: I haz the power, 2014-11-12 02:01:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/699043003/1

[commit-bot: I haz the power, 2014-11-12 02:03:53]

Committed patchset #1 (id:1) as 185166