Extend and fix tests for custom heap snapshot.

Extend and fix tests for custom heap snapshot.

R=vogelheim@chromium.org

Committed: https://crrev.com/a4a62c129bb572ad4525a36473501d484a6ea842
Cr-Commit-Position: refs/heads/master@{#26110}

[Yang, 2015-01-16 12:20:48]

On 2015/01/16 12:19:29, Yang wrote:

If we embed mjsunit.js into d8 and do not provide it via command line, those two
.js tests will fail.
- debug-script.js requires mjsunit.js to be provided via command line.
- iteration-syntax requires mjsunit.js to be subject to strict mode, which it is
not if embedded into d8.

[vogelheim, 2015-01-16 12:37:23]

lgtm

https://codereview.chromium.org/856793002/diff/1/test/mjsunit/debug-script.js
File test/mjsunit/debug-script.js (right):

https://codereview.chromium.org/856793002/diff/1/test/mjsunit/debug-script.js...
test/mjsunit/debug-script.js:99: var mjsunit_js_script =
Debug.findScript(/debug-script.js/);
nipitck: Change var name to match, ie. debug_js_script?

[Yang, 2015-01-16 13:26:29]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-01-16 13:26:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/856793002/20001

[commit-bot: I haz the power, 2015-01-16 22:17:46]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-01-16 22:18:37]

Patchset 2 (id:??) landed as
https://crrev.com/a4a62c129bb572ad4525a36473501d484a6ea842
Cr-Commit-Position: refs/heads/master@{#26110}