Reland improvements to causal async stack traces

Reland improvements to causal async stack traces

Original CL: https://codereview.chromium.org/2690683002

Improvements to causal async stack traces

UX improvements:

- [x] Stop printing the suffix <%s_async_body> and <%s_async_gen_body> for the generated closures.

Fixes #28743

- [x] Don't include the duplicate frame below the asynchronous suspension marker.

Fixes #28742

Bug fixes:

- [x] Fix service protocol enum naming so that it is consistent with other enums.

Fixes #28726

Misc:

- [x] Stop using package:stack_trace now that the VM does it for us.

BUG=
R=asiva@google.com, devoncarew@google.com, rmacnak@google.com

Committed: https://github.com/dart-lang/sdk/commit/19abef97f108461c7cc77e949b84ab078213c301

[Cutch, 2017-02-14 12:58:37]

TBR

[Cutch, 2017-02-14 13:00:15]

Description was changed from

==========
Reland improvements to causal async stack traces

Original CL: https://codereview.chromium.org/2690683002

Improvements to causal async stack traces

UX improvements:

- [x] Stop printing the suffix <%s_async_body> and <%s_async_gen_body> for the
generated closures.

Fixes #28743

- [x] Don't include the duplicate frame below the asynchronous suspension
marker.

Fixes #28742

Bug fixes:

- [x] Fix service protocol enum naming so that it is consistent with other
enums.

Fixes #28726

Misc:

- [x] Stop using package:stack_trace now that the VM does it for us.

BUG=
R=asiva@google.com, devoncarew@google.com, rmacnak@google.com
==========

to

==========
Reland improvements to causal async stack traces

Original CL: https://codereview.chromium.org/2690683002

Improvements to causal async stack traces

UX improvements:

- [x] Stop printing the suffix <%s_async_body> and <%s_async_gen_body> for the
generated closures.

Fixes #28743

- [x] Don't include the duplicate frame below the asynchronous suspension
marker.

Fixes #28742

Bug fixes:

- [x] Fix service protocol enum naming so that it is consistent with other
enums.

Fixes #28726

Misc:

- [x] Stop using package:stack_trace now that the VM does it for us.

BUG=
R=asiva@google.com, devoncarew@google.com, rmacnak@google.com

Committed:
https://github.com/dart-lang/sdk/commit/19abef97f108461c7cc77e949b84ab078213c301
==========

[Cutch, 2017-02-14 13:00:16]

Committed patchset #1 (id:1) manually as
19abef97f108461c7cc77e949b84ab078213c301 (presubmit successful).