Revert of [tracing] Adding task information to heap profiler

Revert of [tracing] Adding task information to heap profiler (patchset #18 id:630001 of https://codereview.chromium.org/1784133002/ )

Reason for revert:
Caused flakiness of trace_test; see Issue 599794.

Original issue's description:
> [tracing] Adding task information to heap profiler
>
> This CL adds more information to the malloc heap profiler added in
> crrev.com/1675183006. The heap profiler only shows trace events and all
> the tasks show up as "MessageLoop::Runtask".
>
> This CL does:
>  - Moves TRACE_TASK_EXECUTION macro from task_annotator to
>    trace_event.h.
>  - Adds extra scoped trace event to track the task context in heap
>    profiler.
>  - The folder where the task was posted from is used to categorize
>    allocations.
>  - Uses the type_name for context temporarily till we define a new
>    context dimension for allocations.
>
> BUG=594803
>
> Committed: https://crrev.com/533c402f8b21e503ebcaf3f0de427f41076b4de1
> Cr-Commit-Position: refs/heads/master@{#384521}

TBR=jochen@chromium.org,dskiba@google.com,oysteine@chromium.org,petrcermak@chromium.org,primiano@chromium.org,skyostil@chromium.org,thakis@chromium.org,ssid@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=594803
Committed: https://crrev.com/7a3a6793b5a471280e64842060d565e6f52e939f
Cr-Commit-Position: refs/heads/master@{#384695}

[Ken Russell (switch to Gerrit), 2016-04-01 21:44:36]

Created Revert of [tracing] Adding task information to heap profiler

[commit-bot: I haz the power, 2016-04-01 21:45:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1846333002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1846333002/1

[commit-bot: I haz the power, 2016-04-01 21:45:58]

Description was changed from

==========
Revert of [tracing] Adding task information to heap profiler (patchset #18
id:630001 of https://codereview.chromium.org/1784133002/ )

Reason for revert:
Caused flakiness of trace_test; see Issue 599794.


Original issue's description:
> [tracing] Adding task information to heap profiler
> 
> This CL adds more information to the malloc heap profiler added in
> crrev.com/1675183006. The heap profiler only shows trace events and all
> the tasks show up as "MessageLoop::Runtask".
> 
> This CL does:
>  - Moves TRACE_TASK_EXECUTION macro from task_annotator to
>    trace_event.h.
>  - Adds extra scoped trace event to track the task context in heap
>    profiler.
>  - The folder where the task was posted from is used to categorize
>    allocations.
>  - Uses the type_name for context temporarily till we define a new
>    context dimension for allocations.
> 
> BUG=594803
> 
> Committed: https://crrev.com/533c402f8b21e503ebcaf3f0de427f41076b4de1
> Cr-Commit-Position: refs/heads/master@{#384521}

TBR=jochen@chromium.org,dskiba@google.com,oysteine@chromium.org,petrcermak@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=594803
==========

to

==========
Revert of [tracing] Adding task information to heap profiler (patchset #18
id:630001 of https://codereview.chromium.org/1784133002/ )

Reason for revert:
Caused flakiness of trace_test; see Issue 599794.


Original issue's description:
> [tracing] Adding task information to heap profiler
> 
> This CL adds more information to the malloc heap profiler added in
> crrev.com/1675183006. The heap profiler only shows trace events and all
> the tasks show up as "MessageLoop::Runtask".
> 
> This CL does:
>  - Moves TRACE_TASK_EXECUTION macro from task_annotator to
>    trace_event.h.
>  - Adds extra scoped trace event to track the task context in heap
>    profiler.
>  - The folder where the task was posted from is used to categorize
>    allocations.
>  - Uses the type_name for context temporarily till we define a new
>    context dimension for allocations.
> 
> BUG=594803
> 
> Committed: https://crrev.com/533c402f8b21e503ebcaf3f0de427f41076b4de1
> Cr-Commit-Position: refs/heads/master@{#384521}

TBR=jochen@chromium.org,dskiba@google.com,oysteine@chromium.org,petrcermak@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=594803
==========

[commit-bot: I haz the power, 2016-04-01 21:45:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-01 21:47:40]

Description was changed from

==========
Revert of [tracing] Adding task information to heap profiler (patchset #18
id:630001 of https://codereview.chromium.org/1784133002/ )

Reason for revert:
Caused flakiness of trace_test; see Issue 599794.


Original issue's description:
> [tracing] Adding task information to heap profiler
> 
> This CL adds more information to the malloc heap profiler added in
> crrev.com/1675183006. The heap profiler only shows trace events and all
> the tasks show up as "MessageLoop::Runtask".
> 
> This CL does:
>  - Moves TRACE_TASK_EXECUTION macro from task_annotator to
>    trace_event.h.
>  - Adds extra scoped trace event to track the task context in heap
>    profiler.
>  - The folder where the task was posted from is used to categorize
>    allocations.
>  - Uses the type_name for context temporarily till we define a new
>    context dimension for allocations.
> 
> BUG=594803
> 
> Committed: https://crrev.com/533c402f8b21e503ebcaf3f0de427f41076b4de1
> Cr-Commit-Position: refs/heads/master@{#384521}

TBR=jochen@chromium.org,dskiba@google.com,oysteine@chromium.org,petrcermak@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=594803
==========

to

==========
Revert of [tracing] Adding task information to heap profiler (patchset #18
id:630001 of https://codereview.chromium.org/1784133002/ )

Reason for revert:
Caused flakiness of trace_test; see Issue 599794.

Original issue's description:
> [tracing] Adding task information to heap profiler
>
> This CL adds more information to the malloc heap profiler added in
> crrev.com/1675183006. The heap profiler only shows trace events and all
> the tasks show up as "MessageLoop::Runtask".
>
> This CL does:
>  - Moves TRACE_TASK_EXECUTION macro from task_annotator to
>    trace_event.h.
>  - Adds extra scoped trace event to track the task context in heap
>    profiler.
>  - The folder where the task was posted from is used to categorize
>    allocations.
>  - Uses the type_name for context temporarily till we define a new
>    context dimension for allocations.
>
> BUG=594803
>
> Committed: https://crrev.com/533c402f8b21e503ebcaf3f0de427f41076b4de1
> Cr-Commit-Position: refs/heads/master@{#384521}

TBR=jochen@chromium.org,dskiba@google.com,oysteine@chromium.org,petrcermak@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=594803

Committed: https://crrev.com/7a3a6793b5a471280e64842060d565e6f52e939f
Cr-Commit-Position: refs/heads/master@{#384695}
==========

[commit-bot: I haz the power, 2016-04-01 21:47:41]

Patchset 1 (id:??) landed as
https://crrev.com/7a3a6793b5a471280e64842060d565e6f52e939f
Cr-Commit-Position: refs/heads/master@{#384695}

[ssid, 2016-04-01 22:33:06]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1851233002/ by ssid@chromium.org.

The reason for reverting is: Fixing the flakiness in trace_test by removing the
event from sequenced_worker_pool.cc.
Also because there are 2 trace events there, I will figure out a way to add
WorkerPool task information in next CL..