[Android, RemotePlayback] Make RemotePlayback classes ActiveScriptWrappable's

[Android, RemotePlayback] Make RemotePlayback classes ActiveScriptWrappable's

Keeps the V8 wrappers alive as long as there're event listeners or pending
promises and such.

BUG=616761
TEST=manual, see repro steps in the bug

Review-Url: https://codereview.chromium.org/2038573002
Cr-Commit-Position: refs/heads/master@{#398014}
(cherry picked from commit 10633dff101889d287c524266420f3b37dc7a23c)

Committed: https://chromium.googlesource.com/chromium/src/+/1ac36391ca6c027b717c25f17026d3e9b9a9f3cd

[whywhat, 2016-06-06 13:22:13]

The CQ bit was checked by avayvod@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-06-06 13:22:20]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2043703002/1

[commit-bot: I haz the power, 2016-06-06 13:22:22]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-06-06 13:22:22]

Dry run: CLs for remote refs other than refs/pending/heads/master must contain
NOTRY=true and NOPRESUBMIT=true in order for the CQ to process them

[whywhat, 2016-06-06 13:27:03]

Description was changed from

==========
[Android, RemotePlayback] Make RemotePlayback classes ActiveScriptWrappable's

Keeps the V8 wrappers alive as long as there're event listeners or pending
promises and such.

BUG=616761
TEST=manual, see repro steps in the bug

Review-Url: https://codereview.chromium.org/2038573002
Cr-Commit-Position: refs/heads/master@{#398014}
(cherry picked from commit 10633dff101889d287c524266420f3b37dc7a23c)
==========

to

==========
[Android, RemotePlayback] Make RemotePlayback classes ActiveScriptWrappable's

Keeps the V8 wrappers alive as long as there're event listeners or pending
promises and such.

BUG=616761
TEST=manual, see repro steps in the bug

Review-Url: https://codereview.chromium.org/2038573002
Cr-Commit-Position: refs/heads/master@{#398014}
(cherry picked from commit 10633dff101889d287c524266420f3b37dc7a23c)

Committed:
https://chromium.googlesource.com/chromium/src/+/1ac36391ca6c027b717c25f17026...
==========

[whywhat, 2016-06-06 13:27:05]

Committed patchset #1 (id:1) manually as
1ac36391ca6c027b717c25f17026d3e9b9a9f3cd.