GCPlugin: Recognize templated registerWeakMembers() call.

GCPlugin: Recognize templated registerWeakMembers() call.

After the inlined trace transition, the callee part of registerWeakMembers()
call can be of type CXXDependentScopeMemberExpr instead of UnresolvedMemberExpr.
The plugin should be aware of this case.

BUG=462511
R=kouhei@chromium.org
CC=zerny@chromium.org, oilpan-reviews@chromium.org

Committed: https://crrev.com/f0e68a4804b61add3a2bb0aed38ab1eb483c04a4
Cr-Commit-Position: refs/heads/master@{#319024}

[kouhei (in TOK), 2015-03-04 06:55:40]

The CQ bit was checked by kouhei@chromium.org

[kouhei (in TOK), 2015-03-04 06:55:41]

lgtm

[commit-bot: I haz the power, 2015-03-04 06:55:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/975683003/1

[haraken, 2015-03-04 07:11:16]

LGTM

[commit-bot: I haz the power, 2015-03-04 07:17:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-04 07:18:38]

Patchset 1 (id:??) landed as
https://crrev.com/f0e68a4804b61add3a2bb0aed38ab1eb483c04a4
Cr-Commit-Position: refs/heads/master@{#319024}