Add HTML test with two dart scripts on one page.

Add HTML test with two dart scripts on one page.

BUG=dartbug.com/20698
R=sigurdm@google.com

Committed: https://code.google.com/p/dart/source/detail?r=41794

[Bill Hesse, 2014-11-14 11:44:49]

whesse@google.com changed reviewers:
+ sigurdm@google.com

[Bill Hesse, 2014-11-14 12:16:53]

whesse@google.com changed reviewers:
+ ricow@google.com

[sigurdm, 2014-11-18 08:19:55]

LGTM

https://codereview.chromium.org/732533002/diff/1/tests/html/two_scripts_test_...
File tests/html/two_scripts_test_first.dart (right):

https://codereview.chromium.org/732533002/diff/1/tests/html/two_scripts_test_...
tests/html/two_scripts_test_first.dart:9: window.postMessage('first_global',
'*');
Why do we have a "local" and a "global" message? What is the difference? Do we
expect cases where one fails and the other succeeds?

[Bill Hesse, 2014-11-18 09:16:47]

https://codereview.chromium.org/732533002/diff/1/tests/html/two_scripts_test_...
File tests/html/two_scripts_test_first.dart (right):

https://codereview.chromium.org/732533002/diff/1/tests/html/two_scripts_test_...
tests/html/two_scripts_test_first.dart:9: window.postMessage('first_global',
'*');
On 2014/11/18 08:19:55, sigurdm wrote:
> Why do we have a "local" and a "global" message? What is the difference? Do we
> expect cases where one fails and the other succeeds?

I just made this up.  I tried to think of something worth testing about two
scripts, and all I could think of was globals.  It can be removed if you want.

[Bill Hesse, 2014-11-18 09:27:01]

Committed patchset #1 (id:1) manually as 41794 (presubmit successful).