Incremental compiler detects when library graph changes.

Incremental compiler detects when library graph changes.

Also, don't suppress all exceptions as it hid errors in the test.

R=johnniwinther@google.com

Committed: https://code.google.com/p/dart/source/detail?r=42505

[ahe, 2014-12-19 09:29:15]

ahe@google.com changed reviewers:
+ johnniwinther@google.com

[ahe, 2014-12-19 09:29:16]

Baby steps: only detection. The incremental compiler magter ikke if you change
library, import, export, or parts.

[Johnni Winther, 2014-12-19 12:07:40]

Please add some tests.

Otherwise LGTM

[Johnni Winther, 2014-12-19 12:35:26]

Disregard the adding test comment.

[ahe, 2014-12-19 12:59:46]

On 2014/12/19 12:35:26, Johnni Winther wrote:
> Disregard the adding test comment.

So I convinced you in person that it already was covered by the existing test.
But that isn't exactly true. I need to have a test which adds an import (and,
for now, ensure it fails).

I'll do that in the next CL.

[ahe, 2014-12-19 13:00:12]

And thank you for taking a look :-)

[ahe, 2014-12-19 13:13:30]

Committed patchset #2 (id:20001) manually as 42505 (presubmit successful).

[ahe, 2014-12-19 14:02:06]

On 2014/12/19 12:59:46, ahe wrote:
> On 2014/12/19 12:35:26, Johnni Winther wrote:
> > Disregard the adding test comment.
> 
> So I convinced you in person that it already was covered by the existing test.
> But that isn't exactly true. I need to have a test which adds an import (and,
> for now, ensure it fails).
> 
> I'll do that in the next CL.

The next CL is: https://codereview.chromium.org/818713002