Resynthesize _DeferredClassElement lazily.

Resynthesize _DeferredClassElement lazily.

This reduces DDC analysis time for the test codebase
from 617 ms. to 447 ms, i.e. about 35% down.

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

Committed: https://github.com/dart-lang/sdk/commit/b68f3b24a61a3b83f52c265b8cf49639a1ffd5b1

[Brian Wilkerson, 2016-05-11 22:05:20]

lgtm

[Paul Berry, 2016-05-11 22:09:37]

lgtm

https://codereview.chromium.org/1969943002/diff/1/pkg/analyzer/lib/src/dart/e...
File pkg/analyzer/lib/src/dart/element/handle.dart (right):

https://codereview.chromium.org/1969943002/diff/1/pkg/analyzer/lib/src/dart/e...
pkg/analyzer/lib/src/dart/element/handle.dart:472: print('No actualElement:
$location  $runtimeType');
Looks like temporary debugging code that should be removed.

https://codereview.chromium.org/1969943002/diff/1/pkg/analyzer/lib/src/summar...
File pkg/analyzer/lib/src/summary/resynthesize.dart (right):

https://codereview.chromium.org/1969943002/diff/1/pkg/analyzer/lib/src/summar...
pkg/analyzer/lib/src/summary/resynthesize.dart:718: * We don't resynthesize
executables of classes until they are requested.
Nit: based on the name, I made the incorrect assumption that `true` means that
the class contains executables (i.e. is non-empty).  Consider renaming to
something like `_executablesResynthesized`.

[scheglov, 2016-05-12 00:24:42]

Description was changed from

==========
Resynthesize _DeferredClassElement lazily.

This reduces DDC analysis time for the test codebase
from 617 ms. to 447 ms, i.e. about 35% down.

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

to

==========
Resynthesize _DeferredClassElement lazily.

This reduces DDC analysis time for the test codebase
from 617 ms. to 447 ms, i.e. about 35% down.

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

Committed:
https://github.com/dart-lang/sdk/commit/b68f3b24a61a3b83f52c265b8cf49639a1ffd5b1
==========

[scheglov, 2016-05-12 00:24:44]

Committed patchset #1 (id:1) manually as
b68f3b24a61a3b83f52c265b8cf49639a1ffd5b1 (presubmit successful).