Devirtualize several mediastream class destructors

Devirtualize several mediastream class destructors

Devirtualize several mediastream class destructors as these classes are never
subclassed, nor do they have any virtual method. This avoids creating unnecessary
vtables.

BUG=311561
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=160619

[eseidel, 2013-10-25 18:08:48]

lgtm

Do these classes need FINAL as well, or are they completely sans-virtual at this
point?

[Inactive, 2013-10-25 18:10:38]

On 2013/10/25 18:08:48, eseidel wrote:
> lgtm
> 
> Do these classes need FINAL as well, or are they completely sans-virtual at
this
> point?

They are completely non-virtual now.

[commit-bot: I haz the power, 2013-10-25 18:45:11]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ch.dumez@samsung.com/44983002/1

[commit-bot: I haz the power, 2013-10-25 20:17:28]

Change committed as 160619

[Tommy Widenflycht, 2013-10-28 08:34:25]

lgtm