Use IDL default argument value for Range.collapse()'s toStart argument

Use IDL default argument value for Range.collapse()'s toStart argument

Replace the existing [Default=Undefined] extended attribute, which since
undefined coerces to false means the same thing, with the actual default
value that's in the specification.

BUG=258153
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=177235

[Jens Widell, 2014-06-30 11:33:15]

PTAL

[Jens Widell, 2014-06-30 15:25:09]

On 2014/06/30 11:33:15, Jens Lindström wrote:
> PTAL

haraken@: I think I published CL this before setting you as reviewer. In case
this made you miss the "announcement," here's another one. :-)

[haraken, 2014-06-30 15:26:53]

LGTM

[Jens Widell, 2014-06-30 15:28:30]

The CQ bit was checked by jl@opera.com

[commit-bot: I haz the power, 2014-06-30 15:29:23]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jl@opera.com/356103003/1

[commit-bot: I haz the power, 2014-06-30 16:33:18]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_blink_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_dbg/builds/1...)
  linux_chromium_gn_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_chromium_gn_rel/bu...)
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/14602)

[commit-bot: I haz the power, 2014-06-30 17:37:30]

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

[commit-bot: I haz the power, 2014-06-30 17:37:31]

Try jobs failed on following builders:
  linux_blink_dbg on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_dbg/builds/1...)

[Jens Widell, 2014-06-30 17:45:20]

The CQ bit was checked by jl@opera.com

[commit-bot: I haz the power, 2014-06-30 17:45:49]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jl@opera.com/356103003/1

[commit-bot: I haz the power, 2014-06-30 18:52:50]

Change committed as 177235