Collect samples for background threads.

Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.

Add timeline events for the mark and sweep tasks.

Reload the isolate list when refreshing the timeline view so it includes profile ticks when the page is loading directly (e.g., F5) instead of only after visiting the vm page.

Fix loading the timeline when profiling is disabled.

BUG=
R=johnmccutchan@google.com

Committed: https://github.com/dart-lang/sdk/commit/366f1f1ed1c6506e3f2cf5f21da694570f67eff1

[rmacnak, 2016-03-17 20:40:25]

Description was changed from

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event time for background compilations.
==========

to

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.
==========

[rmacnak, 2016-03-17 23:53:30]

Description was changed from

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.
==========

to

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.

Add timeline events for the mark and sweep tasks.

Reload the isolate list when refreshing the timeline view so it include profile
ticks when the page is loading directly (e.g., F5) instead of after visiting the
vm page.

Fix loading the timeline when profiling is disabled.
==========

[rmacnak, 2016-03-17 23:54:46]

Description was changed from

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.

Add timeline events for the mark and sweep tasks.

Reload the isolate list when refreshing the timeline view so it include profile
ticks when the page is loading directly (e.g., F5) instead of after visiting the
vm page.

Fix loading the timeline when profiling is disabled.
==========

to

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.

Add timeline events for the mark and sweep tasks.

Reload the isolate list when refreshing the timeline view so it includes profile
ticks when the page is loading directly (e.g., F5) instead of only after
visiting the vm page.

Fix loading the timeline when profiling is disabled.

BUG=
==========

[rmacnak, 2016-03-17 23:58:37]

rmacnak@google.com changed reviewers:
+ johnmccutchan@google.com

[Cutch, 2016-03-18 13:32:50]

Nice!

LGTM.

[rmacnak, 2016-03-18 17:18:41]

Description was changed from

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.

Add timeline events for the mark and sweep tasks.

Reload the isolate list when refreshing the timeline view so it includes profile
ticks when the page is loading directly (e.g., F5) instead of only after
visiting the vm page.

Fix loading the timeline when profiling is disabled.

BUG=
==========

to

==========
Collect samples for background threads.

 - Don't tick vm tags for background threads so the Observatory's summary pie
chart reflects how the mutator spent its time.
 - Similarly, don't factor background samples in the CPU profile view.
 - Do include background samples in the timeline view.

Use a different event name for background compilations.

Add timeline events for the mark and sweep tasks.

Reload the isolate list when refreshing the timeline view so it includes profile
ticks when the page is loading directly (e.g., F5) instead of only after
visiting the vm page.

Fix loading the timeline when profiling is disabled.

BUG=
R=johnmccutchan@google.com

Committed:
https://github.com/dart-lang/sdk/commit/366f1f1ed1c6506e3f2cf5f21da694570f67eff1
==========

[rmacnak, 2016-03-18 17:18:43]

Committed patchset #3 (id:40001) manually as
366f1f1ed1c6506e3f2cf5f21da694570f67eff1 (presubmit successful).