Run |demuxer_| related tasks in the media thread in GTV.

Run |demuxer_| related tasks in the media thread in GTV.

- We found that the reading from |demuxer_| and its read-callback loops run very slowly, in the heavy load situation in the render thread.
to improve the response time of the readings, we run tasks related to |demuxer_| in the media thread.

BUG=268208
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=219225

[ycheo (away), 2013-08-21 13:15:39]

I left media_weak_this_ in order that the code isn't full with some macro.
But, if you think to replace it with the macro is better, I'll follow your
opinion.

[qinmin, 2013-08-21 15:33:35]

lgtm

[ycheo (away), 2013-08-22 09:58:23]

@jochen,
Could you check content/renderer/render_view_impl.cc?

[jochen (gone - plz use gerrit), 2013-08-22 10:01:06]

lgtm

[acolwell GONE FROM CHROMIUM, 2013-08-23 00:41:59]

lgtm % comment.

https://codereview.chromium.org/22875030/diff/9001/content/renderer/media/and...
File content/renderer/media/android/media_source_delegate.cc (left):

https://codereview.chromium.org/22875030/diff/9001/content/renderer/media/and...
content/renderer/media/android/media_source_delegate.cc:43: #define
BIND_TO_RENDER_LOOP(function) \
Please restore this and the _1 variant.

[ycheo (away), 2013-08-23 00:51:21]

https://codereview.chromium.org/22875030/diff/9001/content/renderer/media/and...
File content/renderer/media/android/media_source_delegate.cc (left):

https://codereview.chromium.org/22875030/diff/9001/content/renderer/media/and...
content/renderer/media/android/media_source_delegate.cc:43: #define
BIND_TO_RENDER_LOOP(function) \
On 2013/08/23 00:41:59, acolwell wrote:
> Please restore this and the _1 variant.

Done.

[commit-bot: I haz the power, 2013-08-23 00:53:31]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ycheo@chromium.org/22875030/17001

[commit-bot: I haz the power, 2013-08-23 05:32:54]

Change committed as 219225