Get rid of more uses of CreateStringValue

Get rid of more uses of CreateStringValue

split off from https://codereview.chromium.org/388963002/

BUG=160586
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=283537

[Evan Stade, 2014-07-15 00:06:10]

you already reviewed these changes, but I've split them off from the other CL
because it looks like they might have been causing test failures. Let's see what
the trybots say about this change on its own.

[stevenjb, 2014-07-15 00:38:05]

lgtm

[Evan Stade, 2014-07-15 19:29:23]

The CQ bit was checked by estade@chromium.org

[commit-bot: I haz the power, 2014-07-15 19:30:31]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/estade@chromium.org/390183003/1

[commit-bot: I haz the power, 2014-07-16 00:43:56]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[commit-bot: I haz the power, 2014-07-16 01:07:16]

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

[commit-bot: I haz the power, 2014-07-16 01:07:16]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[Evan Stade, 2014-07-16 22:00:43]

The CQ bit was checked by estade@chromium.org

[commit-bot: I haz the power, 2014-07-16 22:04:04]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/estade@chromium.org/390183003/1

[commit-bot: I haz the power, 2014-07-16 22:07:52]

Change committed as 283537