memory-infra: remove debugging flow-events

memory-infra: remove debugging flow-events

The Trace Viewer UI can hang / OOM if the flow events are not
consistent. Very likely this started happening after memory-infra
started supported queueing of memory dump requests.
Flow events never added too much value, so ditching them to avoid
UI issues. Also this CL switches to the new TRACE_ID_LOCAL trace
macro for the remaining debugging events.

BUG=706042
Review-Url: https://codereview.chromium.org/2778743005
Cr-Commit-Position: refs/heads/master@{#460238}
(cherry picked from commit 21ea0c9b1eb01f5cd463d812c6b9a759d5227239)

Review-Url: https://codereview.chromium.org/2787813002 .
Cr-Commit-Position: refs/branch-heads/3029@{#487}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/e3f707396bb17792de4f3b901b5766dae64b8013

[Primiano Tucci (use gerrit), 2017-03-30 13:03:58]

Description was changed from

==========
memory-infra: remove debugging flow-events

The Trace Viewer UI can hang / OOM if the flow events are not
consistent. Very likely this started happening after memory-infra
started supported queueing of memory dump requests.
Flow events never added too much value, so ditching them to avoid
UI issues. Also this CL switches to the new TRACE_ID_LOCAL trace
macro for the remaining debugging events.

BUG=706042

Review-Url: https://codereview.chromium.org/2778743005
Cr-Commit-Position: refs/heads/master@{#460238}
(cherry picked from commit 21ea0c9b1eb01f5cd463d812c6b9a759d5227239)
==========

to

==========
memory-infra: remove debugging flow-events

The Trace Viewer UI can hang / OOM if the flow events are not
consistent. Very likely this started happening after memory-infra
started supported queueing of memory dump requests.
Flow events never added too much value, so ditching them to avoid
UI issues. Also this CL switches to the new TRACE_ID_LOCAL trace
macro for the remaining debugging events.

BUG=706042

Review-Url: https://codereview.chromium.org/2778743005
Cr-Commit-Position: refs/heads/master@{#460238}
(cherry picked from commit 21ea0c9b1eb01f5cd463d812c6b9a759d5227239)

Review-Url: https://codereview.chromium.org/2787813002 .
Cr-Commit-Position: refs/branch-heads/3029@{#487}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/e3f707396bb17792de4f3b901b57...
==========

[Primiano Tucci (use gerrit), 2017-03-30 13:04:00]

Committed patchset #1 (id:1) manually as
e3f707396bb17792de4f3b901b5766dae64b8013.