[debugger] remove step count parameter from prepare step.

[debugger] remove step count parameter from prepare step.

And tons of changes to debugger tests.

R=bmeurer@chromium.org
BUG=chromium:569835
LOG=N

Committed: https://crrev.com/8bee91a58b37e9030ddf7b43cb9c24e5df7b96a2
Cr-Commit-Position: refs/heads/master@{#32885}

[Yang, 2015-12-16 08:00:34]

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

[commit-bot: I haz the power, 2015-12-16 08:00:46]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1525173003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1525173003/1

[Benedikt Meurer, 2015-12-16 08:03:24]

LGTM with nit (feel free to ignore)

https://codereview.chromium.org/1525173003/diff/1/src/runtime/runtime-debug.cc
File src/runtime/runtime-debug.cc (right):

https://codereview.chromium.org/1525173003/diff/1/src/runtime/runtime-debug.c...
src/runtime/runtime-debug.cc:1215: DCHECK(args.length() == 2);
Nit: DCHECK_EQ(2, args.length())

[commit-bot: I haz the power, 2015-12-16 08:19:40]

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

[commit-bot: I haz the power, 2015-12-16 08:19:41]

Dry run: This issue passed the CQ dry run.

[Yang, 2015-12-16 08:35:01]

On 2015/12/16 08:19:41, commit-bot: I haz the power wrote:
> Dry run: This issue passed the CQ dry run.

[Yang, 2015-12-16 08:35:43]

On 2015/12/16 08:35:01, Yang wrote:
> On 2015/12/16 08:19:41, commit-bot: I haz the power wrote:
> > Dry run: This issue passed the CQ dry run.

Let's clean up those DCHECKs some other time. All of the runtime functions need
to be fixed in this regard.

[Yang, 2015-12-16 08:35:50]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-12-16 08:35:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1525173003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1525173003/1

[commit-bot: I haz the power, 2015-12-16 08:39:42]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-16 08:40:04]

Description was changed from

==========
[debugger] remove step count parameter from prepare step.

And tons of changes to debugger tests.

R=bmeurer@chromium.org
BUG=chromium:569835
LOG=N
==========

to

==========
[debugger] remove step count parameter from prepare step.

And tons of changes to debugger tests.

R=bmeurer@chromium.org
BUG=chromium:569835
LOG=N

Committed: https://crrev.com/8bee91a58b37e9030ddf7b43cb9c24e5df7b96a2
Cr-Commit-Position: refs/heads/master@{#32885}
==========

[commit-bot: I haz the power, 2015-12-16 08:40:05]

Patchset 1 (id:??) landed as
https://crrev.com/8bee91a58b37e9030ddf7b43cb9c24e5df7b96a2
Cr-Commit-Position: refs/heads/master@{#32885}