Add support for external summaries bundle in AnalysisDriver.

Add support for external summaries bundle in AnalysisDriver.

R=brianwilkerson@google.com
BUG=

Committed: https://github.com/dart-lang/sdk/commit/6ad782027abbcb387d116e446a59fccdb6fd4f58

[Brian Wilkerson, 2017-04-21 16:19:39]

lgtm

https://codereview.chromium.org/2829253002/diff/1/pkg/analyzer/lib/src/dart/a...
File pkg/analyzer/lib/src/dart/analysis/file_state.dart (right):

https://codereview.chromium.org/2829253002/diff/1/pkg/analyzer/lib/src/dart/a...
pkg/analyzer/lib/src/dart/analysis/file_state.dart:99: * Return `true` is this
file is a stub created for a file in the provided
"is" --> "if"

https://codereview.chromium.org/2829253002/diff/1/pkg/analyzer/lib/src/dart/a...
pkg/analyzer/lib/src/dart/analysis/file_state.dart:100: * external summary
store. The values of the most properties are not the same
"the most" --> "most"

https://codereview.chromium.org/2829253002/diff/1/pkg/analyzer/test/src/dart/...
File pkg/analyzer/test/src/dart/analysis/driver_test.dart (right):

https://codereview.chromium.org/2829253002/diff/1/pkg/analyzer/test/src/dart/...
pkg/analyzer/test/src/dart/analysis/driver_test.dart:992:
solo_test_externalSummaries() async {
Remove "solo_"

[scheglov, 2017-04-21 16:38:58]

Description was changed from

==========
Add support for external summaries bundle in AnalysisDriver.

R=brianwilkerson@google.com
BUG=
==========

to

==========
Add support for external summaries bundle in AnalysisDriver.

R=brianwilkerson@google.com
BUG=

Committed:
https://github.com/dart-lang/sdk/commit/6ad782027abbcb387d116e446a59fccdb6fd4f58
==========

[scheglov, 2017-04-21 16:38:59]

Committed patchset #2 (id:20001) manually as
6ad782027abbcb387d116e446a59fccdb6fd4f58 (presubmit successful).