Remove RestartFrame from live edit API

Remove RestartFrame from live edit API

There is already non-throwing version FrameMirror.restart and RestartFrame in the livedit-debugger.js just adds a throwing wrapper around it.

Also NEEDS_STEP_IN_PROPERTY_NAME was removed, the client code can decide based on the stack_modified field if "step in" is required.

Chromium side was fixed in https://codereview.chromium.org/1249013002/

BUG=None
LOG=N

Committed: https://crrev.com/84f8e1af76e06f645256055387cdd2f5902917cf
Cr-Commit-Position: refs/heads/master@{#29797}

[yurys, 2015-07-22 15:20:07]

yurys@chromium.org changed reviewers:
+ dgozman@chromium.org, yangguo@chromium.org

[yurys, 2015-07-22 15:20:31]

The CQ bit was checked by yurys@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-07-22 15:20:38]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1247363002/1

[commit-bot: I haz the power, 2015-07-22 18:27:15]

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

[commit-bot: I haz the power, 2015-07-22 18:27:16]

Dry run: This issue passed the CQ dry run.

[Yang, 2015-07-23 06:11:41]

On 2015/07/22 18:27:16, commit-bot: I haz the power wrote:
> Dry run: This issue passed the CQ dry run.

lgtm.

[yurys, 2015-07-23 07:45:08]

The CQ bit was checked by yurys@chromium.org

[commit-bot: I haz the power, 2015-07-23 07:45:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1247363002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1247363002/1

[commit-bot: I haz the power, 2015-07-23 07:46:54]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-23 07:47:06]

Patchset 1 (id:??) landed as
https://crrev.com/84f8e1af76e06f645256055387cdd2f5902917cf
Cr-Commit-Position: refs/heads/master@{#29797}