Introduce new API for detecting when the embedder is in foreground/background.

Introduce new API for detecting when the embedder is in foreground/background.

This will allow us to remove background idle notification calls in Chrome.

BUG=chromium:490559
LOG=NO

Committed: https://crrev.com/527a94017af8f25d7033b532c377a4fa0041c82c
Cr-Commit-Position: refs/heads/master@{#31464}

[ulan, 2015-10-21 16:26:30]

ulan@chromium.org changed reviewers:
+ hpayer@chromium.org

[ulan, 2015-10-21 16:26:31]

PTAL

[Hannes Payer (out of office), 2015-10-22 10:40:55]

lgtm

https://codereview.chromium.org/1406303008/diff/1/include/v8.h
File include/v8.h (right):

https://codereview.chromium.org/1406303008/diff/1/include/v8.h#newcode5795
include/v8.h:5795: * V8 uses these notifications to guide the GC heuristic.
I don't think we should talk about GC on that level. The notification could be
used by other components as well.

[ulan, 2015-10-22 10:44:37]

https://codereview.chromium.org/1406303008/diff/1/include/v8.h
File include/v8.h (right):

https://codereview.chromium.org/1406303008/diff/1/include/v8.h#newcode5795
include/v8.h:5795: * V8 uses these notifications to guide the GC heuristic.
On 2015/10/22 10:40:55, Hannes Payer wrote:
> I don't think we should talk about GC on that level. The notification could be
> used by other components as well.

Removed GC.

[ulan, 2015-10-22 10:45:20]

The CQ bit was checked by ulan@chromium.org

[ulan, 2015-10-22 10:45:20]

The patchset sent to the CQ was uploaded after l-g-t-m from hpayer@chromium.org
Link to the patchset: https://codereview.chromium.org/1406303008/#ps20001
(title: "Fix comment")

[commit-bot: I haz the power, 2015-10-22 10:45:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1406303008/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1406303008/20001

[commit-bot: I haz the power, 2015-10-22 11:09:06]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-22 11:09:33]

Patchset 2 (id:??) landed as
https://crrev.com/527a94017af8f25d7033b532c377a4fa0041c82c
Cr-Commit-Position: refs/heads/master@{#31464}