Merge 285317 "Merge 285314 "Turn webspeech on/off when tab goes ..."

Merge 285317 "Merge 285314 "Turn webspeech on/off when tab goes ..."

> Merge 285314 "Turn webspeech on/off when tab goes fore/background"
> 
> > Turn webspeech on/off when tab goes fore/background
> > 
> > This change adds a toggle to turn webspeech off when tab goes background.
> > And further request to turn media capture devices on will be denied.
> > So Both WebRTC and webSpeech won't be able to initiate new requests when tab is in background.
> > 
> > This CL also fixed a bug in the original CL that was reverted: some times recognition will not be aborted immediately after screen lock.
> > The issue is caused by that calling abort() will not delete the session in SpeechRecognitionManagerImpl.
> > So if a SpeechRecognition objects calls multiple start(), several sessions with the same request_id will be created.
> > And when passing the request_id to abort the sessions, only 1 session will be aborted
> > This change requests the all sessions in the same render view to be aborted.
> > Thus solving the above issue.
> > 
> > BUG=396054
> > R=jochen@chromium.org, tsepez@chromium.org, xians@chromium.org
> > 
> > Review URL: https://codereview.chromium.org/415933002
> 
> TBR=qinmin@chromium.org
> 
> Review URL: https://codereview.chromium.org/419503005

TBR=qinmin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=286376

[kerz_chromium, 2014-07-30 02:25:22]

Committed patchset #1 manually as r286376 (tree was closed).