Fix unexpected metrics preference resetting.

Fix unexpected metrics preference resetting.

Currently, if metrics preference is already enabled on
arc_support extension starting, then the checkbox is
hidden. Thus, isMetricsEnabled=false is sent onAgree
and then it is disabled un-intentionally.

This CL fixes the bug.

BUG=656006
, b/32132303
TEST=Ran on test device.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2413203003
Cr-Commit-Position: refs/heads/master@{#425334}
(cherry picked from commit 6ecec1dcd1856abc9b37d94a460c4f96e047e5ba)

Committed: https://chromium.googlesource.com/chromium/src/+/486eb87a797721af37ed1632754d64bd5df66a51

[hidehiko, 2016-10-19 04:01:18]

Description was changed from

==========
Fix unexpected metrics preference resetting.

Currently, if metrics preference is already enabled on
arc_support extension starting, then the checkbox is
hidden. Thus, isMetricsEnabled=false is sent onAgree
and then it is disabled un-intentionally.

This CL fixes the bug.

BUG=656006, b/32132303
TEST=Ran on test device.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2413203003
Cr-Commit-Position: refs/heads/master@{#425334}
(cherry picked from commit 6ecec1dcd1856abc9b37d94a460c4f96e047e5ba)
==========

to

==========
Fix unexpected metrics preference resetting.

Currently, if metrics preference is already enabled on
arc_support extension starting, then the checkbox is
hidden. Thus, isMetricsEnabled=false is sent onAgree
and then it is disabled un-intentionally.

This CL fixes the bug.

BUG=656006, b/32132303
TEST=Ran on test device.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2413203003
Cr-Commit-Position: refs/heads/master@{#425334}
(cherry picked from commit 6ecec1dcd1856abc9b37d94a460c4f96e047e5ba)

Committed:
https://chromium.googlesource.com/chromium/src/+/486eb87a797721af37ed1632754d...
==========

[hidehiko, 2016-10-19 04:01:21]

Committed patchset #1 (id:1) manually as
486eb87a797721af37ed1632754d64bd5df66a51.