Roll GTM to 626.

Roll GTM to 626.

This roll fixes the -Wdeprecated-declarations and -Wenum-conversion
warnings on iOS builds.

r626 Update the line break mode to use the updated constant, NSLineBreakByClipping, instead of UILineBreakModeClip
r625 Fix up some assertions so that they don't run into issues with format strings not being constants.
r624 Fix up build breakage on older compilers in GTMScriptRunner.m
r623 Edited wiki page iPhoneUnitTesting through web user interface.
r622 Edited wiki page iPhoneUnitTesting through web user interface.
r621 Fix for GTMScriptRunner:run:standardError: deadlocks with full error pipe
r620 Adding support for unit tests using ARC.
r619 Fix up some compiler warnings.
r618 Turn on three warnings that were on in Pulse but not on for local development.
r617 Deprecate GTMObjectSingleton for 10.9/iOS 7 to force removal of the dependency from projects using it.

BUG=None
TEST=None

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=251840

[blundell, 2014-01-30 14:11:18]

It would be good to provide the one-line descriptions of the CLs being captured.

[justincohen, 2014-01-30 14:14:33]

Updated!

[Mark Mentovai, 2014-01-30 14:36:09]

LGTM

[commit-bot: I haz the power, 2014-01-30 14:41:00]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/justincohen@chromium.org/150363002/1

[commit-bot: I haz the power, 2014-01-30 15:41:50]

CQ bit was unchecked on CL. Ignoring.

[justincohen, 2014-02-18 17:24:36]

The CQ bit was checked by justincohen@chromium.org

[commit-bot: I haz the power, 2014-02-18 17:24:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/justincohen@chromium.org/150363002/20001

[commit-bot: I haz the power, 2014-02-18 18:22:48]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/justincohen@chromium.org/150363002/20001

[commit-bot: I haz the power, 2014-02-18 18:30:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/justincohen@chromium.org/150363002/20001

[commit-bot: I haz the power, 2014-02-18 21:08:25]

Change committed as 251840