Steer clear of g++ scoping bug in range-based for loop.

Steer clear of g++ scoping bug in range-based for loop.

With g++, the scope of the per-element local variable currently
(g++-4.8.1) and incorrectly extends over the generator/range
expression also,

  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54430

Rename the loop variable in CachedMatchedPropertiesHashTraits's
traceInCollection() to avoid running into the bug.

R=haraken
BUG=

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=183574

[sof, 2014-10-10 20:28:50]

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

[sof, 2014-10-10 20:28:50]

Please take a look.

Unbreaks Oilpan ToT w/ g++.

[haraken, 2014-10-11 01:02:15]

LGTM

[sof, 2014-10-11 05:25:06]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-10-11 05:25:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/646013002/1

[Mike West, 2014-10-11 07:07:43]

LGTM 2, though Kentaro-san was _way_ faster than I. :)

[commit-bot: I haz the power, 2014-10-11 10:03:44]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-11 10:03:45]

Try jobs failed on following builders:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/31307)

[sof, 2014-10-11 13:50:39]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2014-10-11 13:50:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/646013002/1

[commit-bot: I haz the power, 2014-10-11 14:26:44]

Committed patchset #1 (id:1) as 183574