Revert of Remove usages of Timeline commands in telemetry

Revert of Remove usages of Timeline commands in telemetry (patchset #4 id:60001 of https://codereview.chromium.org/895043002/)

Reason for revert:
Windows telemetry unit tests are failing intermittently after this patch.

Sample failing build:
http://build.chromium.org/p/chromium.win/builders/Vista%20Tests%20%281%29/builds/53177

Output:
[1/1] telemetry.core.backends.chrome_inspector.inspector_network_unittest.InspectorNetworkTabTest.testHTTPResponseTimelineRecorder failed unexpectedly:
  Could not find Flash at E:\b\build\slave\Vista_Tests__1_\build\src\third_party\adobe\flash\binaries\ppapi\win\pepflashplayer.dll. Continuing without Flash.
  To run with Flash, check it out via http://go/read-src-internal
  Traceback (most recent call last):
    File "E:\b\build\slave\Vista_Tests__1_\build\src\tools\telemetry\telemetry\decorators.py", line 55, in wrapper
      func(*args, **kwargs)
    File "E:\b\build\slave\Vista_Tests__1_\build\src\tools\telemetry\telemetry\core\backends\chrome_inspector\inspector_network_unittest.py", line 40, in testHTTPResponseTimelineRecorder
      self.assertEqual(test.responses_count, len(events))
  AssertionError: 1 != 2

Original issue's description:
> Remove usages of Timeline commands in telemetry
>
> We are going to remove Timeline domain from the remote debugging protocol soon. This CL fixes remaining usages of timeline commands.
>
> BUG=448318
>
> Committed: https://crrev.com/9ca9eb0c7668c7a7e1f595ea0c4f3bca221e9350
> Cr-Commit-Position: refs/heads/master@{#314522}

TBR=caseq@chromium.org,pfeldman@chromium.org,marja@chromium.org,yurys@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=448318
Committed: https://crrev.com/07f4d58b145978364219ec53e2965ed700b2da71
Cr-Commit-Position: refs/heads/master@{#314589}

[ccameron, 2015-02-04 18:25:07]

Created Revert of Remove usages of Timeline commands in telemetry

[commit-bot: I haz the power, 2015-02-04 18:25:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/903523002/1

[commit-bot: I haz the power, 2015-02-04 18:27:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-02-04 18:28:38]

Patchset 1 (id:??) landed as
https://crrev.com/07f4d58b145978364219ec53e2965ed700b2da71
Cr-Commit-Position: refs/heads/master@{#314589}

[yurys, 2015-02-06 10:43:48]

yurys@chromium.org changed reviewers:
+ sullivan@chromium.org

[yurys, 2015-02-06 10:43:49]

The CL just revealed flakiness that has been observed on other bots as well:
crbug.com/449979
crbug.com/452279
crbug.com/455269


After my CL the test started doing less work and should be completing sooner
than before. That might be a reason of the increased flakiness. I'm going to
reland the patch and mark the test as flaky on Vista (it is already disabled on
mac, android and win [1]).



[1]
https://code.google.com/p/chromium/codesearch#chromium/src/tools/telemetry/te...

[yurys, 2015-02-06 10:45:54]

On 2015/02/06 10:43:49, yurys wrote:
> The CL just revealed flakiness that has been observed on other bots as well:
> crbug.com/449979
> crbug.com/452279
> crbug.com/455269
> 
> 
> After my CL the test started doing less work and should be completing sooner
> than before. That might be a reason of the increased flakiness. I'm going to
> reland the patch and mark the test as flaky on Vista (it is already disabled
on
> mac, android and win [1]).
> 
> 
> 
> [1]
>
https://code.google.com/p/chromium/codesearch#chromium/src/tools/telemetry/te...

Oh, in fact it is already disabled on Win [2].

[2]
https://chromium.googlesource.com/chromium/src/+/3197f15cab79f95db67aad31cf60...