Fix Media page load metric names to match name in code.

Fix Media page load metric names to match name in code.

BUG=708141
Review-Url: https://codereview.chromium.org/2791923008
Cr-Commit-Position: refs/heads/master@{#461749}
Committed: https://chromium.googlesource.com/chromium/src/+/19e6e13cfa014abe86feba8dbb549190becb2304

[Bryan McQuade, 2017-04-04 12:38:21]

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

[commit-bot: I haz the power, 2017-04-04 12:38:35]

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

[Bryan McQuade, 2017-04-04 12:51:01]

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

[Bryan McQuade, 2017-04-04 12:51:10]

PTAL, thanks!

[commit-bot: I haz the power, 2017-04-04 14:05:36]

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

[commit-bot: I haz the power, 2017-04-04 14:05:37]

Dry run: This issue passed the CQ dry run.

[Ilya Sherman, 2017-04-04 16:40:04]

The CQ bit was checked by isherman@chromium.org

[Ilya Sherman, 2017-04-04 16:40:05]

lgtm

[commit-bot: I haz the power, 2017-04-04 16:40:38]

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, 2017-04-04 16:47:53]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491324004644220, "parent_rev":
"77214d3c726115ef0205026fd78a70a521df0d6b", "commit_rev":
"19e6e13cfa014abe86feba8dbb549190becb2304"}

[commit-bot: I haz the power, 2017-04-04 16:48:50]

Description was changed from

==========
Fix Media page load metric names to match name in code.

BUG=708141
==========

to

==========
Fix Media page load metric names to match name in code.

BUG=708141

Review-Url: https://codereview.chromium.org/2791923008
Cr-Commit-Position: refs/heads/master@{#461749}
Committed:
https://chromium.googlesource.com/chromium/src/+/19e6e13cfa014abe86feba8dbb54...
==========

[commit-bot: I haz the power, 2017-04-04 16:48:51]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/19e6e13cfa014abe86feba8dbb54...