[tracing] Avoid flushing system cache when not supported

[tracing] Avoid flushing system cache when not supported

BUG=chromium:671156
Review-Url: https://codereview.chromium.org/2623423005
Committed: https://chromium.googlesource.com/external/github.com/catapult-project/catapult/+/77a59e090b01ec2afdca430015079bb1c4a1ecaf

[hjd, 2017-01-13 11:24:27]

hjd@chromium.org changed reviewers:
+ nednguyen@google.com, perezju@chromium.org

[hjd, 2017-01-13 11:34:04]

ptal, thanks!

[nednguyen, 2017-01-13 13:25:59]

lgtm

Though I am really puzzled by how your last patch got through the CQ

[nednguyen, 2017-01-13 13:27:40]

https://codereview.chromium.org/2623423005/diff/20001/telemetry/telemetry/int...
File telemetry/telemetry/internal/browser/browser.py (right):

https://codereview.chromium.org/2623423005/diff/20001/telemetry/telemetry/int...
telemetry/telemetry/internal/browser/browser.py:52:
self.platform.FlushEntireSystemCache()
Add another else & add log.warning: "Flush system cache is not supported. Did
not flush system cache"

[hjd, 2017-01-13 15:25:34]

The CQ bit was checked by hjd@chromium.org

[hjd, 2017-01-13 15:25:34]

The patchset sent to the CQ was uploaded after l-g-t-m from nednguyen@google.com
Link to the patchset: https://codereview.chromium.org/2623423005/#ps40001
(title: "add warning")

[commit-bot: I haz the power, 2017-01-13 15:25:42]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-13 15:46:22]

CQ is committing da patch.

Bot data: {"patchset_id": 40001, "attempt_start_ts": 1484321134012000,
"parent_rev": "e6b04fef1997055d90390256fe96282bbbd98a51", "commit_rev":
"77a59e090b01ec2afdca430015079bb1c4a1ecaf"}

[commit-bot: I haz the power, 2017-01-13 15:46:26]

Description was changed from

==========
[tracing] Avoid flushing system cache when not supported

BUG=chromium:671156
==========

to

==========
[tracing] Avoid flushing system cache when not supported

BUG=chromium:671156

Review-Url: https://codereview.chromium.org/2623423005
Committed:
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...
==========

[commit-bot: I haz the power, 2017-01-13 15:46:27]

Committed patchset #3 (id:40001) as
https://chromium.googlesource.com/external/github.com/catapult-project/catapu...