Catch exceptions while preparing analysis.implemented notification.

Catch exceptions while preparing analysis.implemented notification.

This notification is sent often, and uses index and search engine. We
have several exceptions in internal logs, and all there exceptions are
fatal by default. It seems too harsh to shutdown the server because of
a missing notification.

R=brianwilkerson@google.com
BUG=

Committed: https://github.com/dart-lang/sdk/commit/ef015221b1cf6ed345f5fae22f65ef6d2096f702

[Brian Wilkerson, 2016-09-26 19:34:11]

lgtm

[scheglov, 2016-09-26 19:54:38]

Description was changed from

==========
Catch exceptions while preparing analysis.implemented notification.

This notification is sent often, and uses index and search engine. We
have several exceptions in internal logs, and all there exceptions are
fatal by default. It seems too harsh to shutdown the server because of
a missing notification.

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

to

==========
Catch exceptions while preparing analysis.implemented notification.

This notification is sent often, and uses index and search engine. We
have several exceptions in internal logs, and all there exceptions are
fatal by default. It seems too harsh to shutdown the server because of
a missing notification.

R=brianwilkerson@google.com
BUG=

Committed:
https://github.com/dart-lang/sdk/commit/ef015221b1cf6ed345f5fae22f65ef6d2096f702
==========

[scheglov, 2016-09-26 19:54:39]

Committed patchset #1 (id:1) manually as
ef015221b1cf6ed345f5fae22f65ef6d2096f702 (presubmit successful).