Revert: Per navigation sticky media permissions.

Revert: Per navigation sticky media permissions.
This CL re-enables the same behavior for getUserMedia prompts as it was in M35.
The reason for this is because there was a change of hearts at the standards level about this.
More information in the issue.

BUG=269719
COLLABORATOR=xians

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=276974

[tommi (sloooow) - chröme, 2014-06-12 21:26:43]

On 2014/06/12 20:22:42, tommi (OOO June 13-23) wrote:

Shijing - can you land this tomorrow if there are no issues?
If you do see issues, I added you as a collaborator so feel free to make changes
but please let me know if they're not minor (I'll check my email).  Thanks!

[no longer working on chromium, 2014-06-13 07:34:49]

On 2014/06/12 21:26:43, tommi (OOO June 13-23) wrote:
> On 2014/06/12 20:22:42, tommi (OOO June 13-23) wrote:
> 
> Shijing - can you land this tomorrow if there are no issues?
> If you do see issues, I added you as a collaborator so feel free to make
changes
> but please let me know if they're not minor (I'll check my email).  Thanks!

No problem. I will take care of it. Have a nice trip.

lgtm

[no longer working on chromium, 2014-06-13 07:34:52]

The CQ bit was checked by xians@chromium.org

[commit-bot: I haz the power, 2014-06-13 07:36:12]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tommi@chromium.org/336653002/1

[commit-bot: I haz the power, 2014-06-13 08:39:02]

Change committed as 276974

[henrika (OOO until Aug 14), 2014-06-16 07:40:03]

A revert of this CL has been created in
https://codereview.chromium.org/338753002/ by henrika@chromium.org.

The reason for reverting is: THis CL breaks several WebRTC bots. See e.g.
http://chromegw.corp.google.com/i/internal.chromium.webrtc/builders/Win7%20Te....

[32/32]
WebRtcWebcamBrowserTests/WebRtcWebcamBrowserTest.TestAcquiringAndReacquiringWebcam/1
(TIMED OUT)
2 tests timed out:
   
WebRtcWebcamBrowserTests/WebRtcWebcamBrowserTest.TestAcquiringAndReacquiringWebcam/0
   
WebRtcWebcamBrowserTests/WebRtcWebcamBrowserTest.TestAcquiringAndReacquiringWebcam/1.