Adding an ALAC enum to AudioDecoderConfig

Adding an ALAC enum to AudioDecoderConfig

This CL enables using the ALAC codec within the media pipeline.
This does not add ALAC support, as the ALAC codec is not part of the current build.

BUG=441343
Committed: https://crrev.com/3e0fe16bc2c849c91530b0864b944bc5d736f9c7
Cr-Commit-Position: refs/heads/master@{#313654}

[mikhal1, 2015-01-26 22:28:52]

mikhal@chromium.org changed reviewers:
+ dalecurtis@chromium.org, scherkus@chromium.org

[mikhal1, 2015-01-26 22:28:53]

Please review.

[DaleCurtis, 2015-01-26 23:19:55]

I see test data, but no new test?  Are you going to put a test somewhere else?
If so I think that file should go with the repo containing the test.

[ddorwin, 2015-01-26 23:39:43]

ddorwin@chromium.org changed reviewers:
+ ddorwin@chromium.org

[ddorwin, 2015-01-26 23:39:43]

Is this one of multiple CLs? It doesn't seem to do what the first line of the
description says. Perhaps the two lines should be replaced with "Add ALAC to the
audio decoder config enum."

Such a new feature should have a BUG, especially if there are multiple CLs.

[mikhal1, 2015-01-27 18:15:19]

On 2015/01/26 23:39:43, ddorwin wrote:
> Is this one of multiple CLs? It doesn't seem to do what the first line of the
> description says. Perhaps the two lines should be replaced with "Add ALAC to
the
> audio decoder config enum."
> 
> Such a new feature should have a BUG, especially if there are multiple CLs.

I have removed the test file and clarified the commit message. Please let me
know if you have further questions.

[DaleCurtis, 2015-01-27 19:51:02]

lgtm

[mikhal1, 2015-01-28 17:51:00]

The CQ bit was checked by mikhal@chromium.org

[commit-bot: I haz the power, 2015-01-28 17:51:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/881603002/40001

[commit-bot: I haz the power, 2015-01-28 17:59:56]

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

[commit-bot: I haz the power, 2015-01-28 17:59:57]

Try jobs failed on following builders:
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[mikhal1, 2015-01-29 00:45:18]

The CQ bit was checked by mikhal@chromium.org

[commit-bot: I haz the power, 2015-01-29 00:46:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/881603002/60001

[commit-bot: I haz the power, 2015-01-29 02:51:34]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-01-29 02:52:44]

Patchset 4 (id:??) landed as
https://crrev.com/3e0fe16bc2c849c91530b0864b944bc5d736f9c7
Cr-Commit-Position: refs/heads/master@{#313654}