GC plugin: RefPtr<T> is legal if T is RefCountedGC-derived.

GC plugin: RefPtr<T> is legal if T is RefCountedGC-derived.

Allow RefPtr<T> uses for classes that derive from
RefCountedGarbageCollected<T>.

R=
BUG=553613
Committed: https://crrev.com/c175b30bb17b947d49597d1391a5542692fce3eb
Cr-Commit-Position: refs/heads/master@{#359074}

[sof, 2015-11-11 08:20:00]

sigbjornf@opera.com changed reviewers:
+ oilpan-reviews@chromium.org

[sof, 2015-11-11 08:20:00]

please take a look.

[haraken, 2015-11-11 09:31:34]

haraken@chromium.org changed reviewers:
+ hans@chromium.org, haraken@chromium.org, thakis@chromium.org

[haraken, 2015-11-11 09:31:34]

LGTM

+thakis and +hans for the plugin change

[sof, 2015-11-11 09:42:55]

On 2015/11/11 09:31:34, haraken wrote:
> LGTM
> 
> +thakis and +hans for the plugin change

Notice that this change makes the plugin less restrictive, so we'll have to add
one or two "gc plugin ignore" exemptions to the codebase until it is rolled out.

[hans, 2015-11-11 09:43:04]

lgtm

[sof, 2015-11-11 09:58:39]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2015-11-11 09:59:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1433883003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1433883003/1

[commit-bot: I haz the power, 2015-11-11 10:04:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-11 10:05:06]

Patchset 1 (id:??) landed as
https://crrev.com/c175b30bb17b947d49597d1391a5542692fce3eb
Cr-Commit-Position: refs/heads/master@{#359074}