Makes create_snapshot_bin.py pass along a --package_root flag.

Makes create_snapshot_bin.py pass along a --package_root flag.

This allows a script snapshot to import from package: uris.

R=asiva@google.com

Committed: https://code.google.com/p/dart/source/detail?r=42887

[zra, 2015-01-14 21:45:04]

zra@google.com changed reviewers:
+ asiva@google.com

[siva, 2015-01-14 21:49:50]

lgtm

https://codereview.chromium.org/850193002/diff/1/runtime/tools/create_snapsho...
File runtime/tools/create_snapshot_bin.py (right):

https://codereview.chromium.org/850193002/diff/1/runtime/tools/create_snapsho...
runtime/tools/create_snapshot_bin.py:35: help="Path used to resolve package:
imports.")
The help string doesn't seem to follow the same pattern as the other
strings above, maybe
"path used to resolve package: imports"

[zra, 2015-01-14 21:59:18]

https://codereview.chromium.org/850193002/diff/1/runtime/tools/create_snapsho...
File runtime/tools/create_snapshot_bin.py (right):

https://codereview.chromium.org/850193002/diff/1/runtime/tools/create_snapsho...
runtime/tools/create_snapshot_bin.py:35: help="Path used to resolve package:
imports.")
On 2015/01/14 21:49:49, siva wrote:
> The help string doesn't seem to follow the same pattern as the other
> strings above, maybe
> "path used to resolve package: imports"

Done.

[zra, 2015-01-14 21:59:39]

Committed patchset #2 (id:20001) manually as r42887 (presubmit successful).