DevTools: extract TracingManager from TracingModel, step 2

DevTools: extract TracingManager from TracingModel, step 2

This just moves code from sdk/TracingModel.js to timeline/TracingModel.js
and renames the former to sdk/TracingManager.js. No actual code was harmed.

BUG=412709
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181797

[caseq, 2014-09-10 15:42:03]

caseq@chromium.org changed reviewers:
+ loislo@chromium.org, yurys@chromium.org

[caseq, 2014-09-10 15:42:03]

This is a follow-up to https://codereview.chromium.org/557013005/

[loislo, 2014-09-11 06:30:01]

The CQ bit was checked by loislo@chromium.org

[loislo, 2014-09-11 06:30:01]

lgtm

[commit-bot: I haz the power, 2014-09-11 06:30:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/563463003/1

[commit-bot: I haz the power, 2014-09-11 06:38:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-11 06:38:22]

Try jobs failed on following builders:
  blink_presubmit on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/1...)

[yurys, 2014-09-11 06:49:24]

lgtm

https://codereview.chromium.org/563463003/diff/1/Source/devtools/front_end/sd...
File Source/devtools/front_end/sdk/TracingManager.js (right):

https://codereview.chromium.org/563463003/diff/1/Source/devtools/front_end/sd...
Source/devtools/front_end/sdk/TracingManager.js:2: * Copyright 2014 The Chromium
Authors. All rights reserved.
nit: I guess we use // -style comments for license header in most of the places

[loislo, 2014-09-11 06:52:22]

The CQ bit was checked by loislo@chromium.org

[commit-bot: I haz the power, 2014-09-11 06:52:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/563463003/1

[commit-bot: I haz the power, 2014-09-11 07:12:27]

Committed patchset #1 (id:1) as 181797