Web Audio: measure cross origin iframe usage.

Web Audio: measure cross origin iframe usage.

In order to figure out whether we can add restrictions on Web Audio
usage on cross origin iframes without breaking the Web.

BUG=625136
Committed: https://crrev.com/ab151b40b44688092a5c0a8b5e0d26d963020dec
Cr-Commit-Position: refs/heads/master@{#403669}

[mlamouri (slow - plz ping), 2016-07-01 13:03:45]

mlamouri@chromium.org changed reviewers:
+ dcheng@chromium.org

[mlamouri (slow - plz ping), 2016-07-01 13:03:45]

dcheng@, PTAL :)

[mlamouri (slow - plz ping), 2016-07-01 13:04:13]

mlamouri@chromium.org changed reviewers:
+ isherman@chromium.org

[mlamouri (slow - plz ping), 2016-07-01 13:04:13]

+isherman@, PTAL at histograms changes.

[mlamouri (slow - plz ping), 2016-07-01 13:04:18]

The CQ bit was checked by mlamouri@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-07-01 13:04:26]

Dry run: 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, 2016-07-01 13:06:06]

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

[commit-bot: I haz the power, 2016-07-01 13:06:07]

Dry run: Try jobs failed on following builders:
  ios-device on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device/builds...)
  ios-device-gn on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device-gn/bui...)
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)
  mac_chromium_gyp_rel on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_gyp_...)
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Ilya Sherman, 2016-07-01 16:39:37]

histograms.xml lgtm

[dcheng, 2016-07-04 06:48:07]

rs lgtm

[mlamouri (slow - plz ping), 2016-07-04 09:50:18]

The CQ bit was checked by mlamouri@chromium.org

[mlamouri (slow - plz ping), 2016-07-04 09:50:19]

The patchset sent to the CQ was uploaded after l-g-t-m from
isherman@chromium.org, dcheng@chromium.org
Link to the patchset: https://codereview.chromium.org/2120473002/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2016-07-04 09:50:29]

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, 2016-07-04 12:11:55]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-07-04 12:12:08]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-04 12:13:29]

Description was changed from

==========
Web Audio: measure cross origin iframe usage.

In order to figure out whether we can add restrictions on Web Audio
usage on cross origin iframes without breaking the Web.

BUG=625136
==========

to

==========
Web Audio: measure cross origin iframe usage.

In order to figure out whether we can add restrictions on Web Audio
usage on cross origin iframes without breaking the Web.

BUG=625136

Committed: https://crrev.com/ab151b40b44688092a5c0a8b5e0d26d963020dec
Cr-Commit-Position: refs/heads/master@{#403669}
==========

[commit-bot: I haz the power, 2016-07-04 12:13:30]

Patchset 2 (id:??) landed as
https://crrev.com/ab151b40b44688092a5c0a8b5e0d26d963020dec
Cr-Commit-Position: refs/heads/master@{#403669}