Add mime types for HLS

Add mime types for HLS

HTTP Live streaming is supported by Android media player where
Clank can be installed (ICS and above) but mime type was not
being recognized properly. This CL rectifies it by adding the
types to the supported list.

BUG=332309
Tested: Android 4.04, 4.3, 4.4

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=244467

[Jinsuk Kim, 2014-01-09 09:24:23]

Hi Chris, I'm from Android TV team and have been working on Clank to make sure
it works fine on TV platform. Would you be able to review the cl? Thanks.

[cbentzel, 2014-01-10 11:23:13]

So we already have support for these mime types in the renderer?

I want to make sure that by enabling this we don't result in blank pages since 

a) The data isn't converted to a download
b) The renderer can handle it.

If that's the case, then LGTM

[Jinsuk Kim, 2014-01-12 23:54:30]

On 2014/01/10 11:23:13, cbentzel wrote:
> So we already have support for these mime types in the renderer?
> 
> I want to make sure that by enabling this we don't result in blank pages since

> 
> a) The data isn't converted to a download
> b) The renderer can handle it.
> 
> If that's the case, then LGTM

Thanks for the review.

Correct, the data is processed by media player not converted to download. And we
can see the video rendered on the screen as expected.

[commit-bot: I haz the power, 2014-01-12 23:54:55]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jinsukkim@chromium.org/130853002/30001

[commit-bot: I haz the power, 2014-01-13 06:59:19]

Change committed as 244467