Issue 26629. Detect cache inconsistency in GetContentTask.

Issue 26629. Detect cache inconsistency in GetContentTask.

When it is detected, invalidate the outputs and throw an exception to
let Driver know that it should to recover.

R=brianwilkerson@google.com, paulberry@google.com
BUG= https://github.com/dart-lang/sdk/issues/26629

Committed: https://github.com/dart-lang/sdk/commit/979543e3a8356ef7c775a689613278c5ea7e3101

[Brian Wilkerson, 2016-06-08 22:21:55]

lgtm

https://codereview.chromium.org/2050573003/diff/1/pkg/analyzer/lib/task/model...
File pkg/analyzer/lib/task/model.dart (right):

https://codereview.chromium.org/2050573003/diff/1/pkg/analyzer/lib/task/model...
pkg/analyzer/lib/task/model.dart:434: final AnalysisTarget target;
I suspect this will always be a Source, but the extra generality might not be a
problem.

[scheglov, 2016-06-09 15:31:10]

Description was changed from

==========
Issue 26629. Detect cache inconsistency in GetContentTask.

When it is detected, invalidate the outputs and throw an exception to
let Driver know that it should to recover.

R=brianwilkerson@google.com, paulberry@google.com
BUG= https://github.com/dart-lang/sdk/issues/26629
==========

to

==========
Issue 26629. Detect cache inconsistency in GetContentTask.

When it is detected, invalidate the outputs and throw an exception to
let Driver know that it should to recover.

R=brianwilkerson@google.com, paulberry@google.com
BUG= https://github.com/dart-lang/sdk/issues/26629

Committed:
https://github.com/dart-lang/sdk/commit/979543e3a8356ef7c775a689613278c5ea7e3101
==========

[scheglov, 2016-06-09 15:31:12]

Committed patchset #1 (id:1) manually as
979543e3a8356ef7c775a689613278c5ea7e3101 (presubmit successful).