Fix leak in VRServiceImpl

Fix leak in VRServiceImpl

This makes the implicit Strong Binding between the service and clients explicit, and fixes the service leaking when the binding is closed.

No functional changes here.

BUG=651245
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation
TBR=brettw@chromium.org

Review-Url: https://codereview.chromium.org/2571323002
Cr-Commit-Position: refs/heads/master@{#439333}
(cherry picked from commit 7980a0e0ca7f5a6abda7e57ab28fbf8f845bfbf8)

Committed: https://chromium.googlesource.com/chromium/src/+/225bb8d94ed0a406519a9935c6577a2855aafed1

[bshe, 2016-12-21 18:53:40]

Description was changed from

==========
Fix leak in VRServiceImpl

This makes the implicit Strong Binding between the service and clients explicit,
and fixes the service leaking when the binding is closed.

No functional changes here.

BUG=651245
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation
TBR=brettw@chromium.org

Review-Url: https://codereview.chromium.org/2571323002
Cr-Commit-Position: refs/heads/master@{#439333}
(cherry picked from commit 7980a0e0ca7f5a6abda7e57ab28fbf8f845bfbf8)
==========

to

==========
Fix leak in VRServiceImpl

This makes the implicit Strong Binding between the service and clients explicit,
and fixes the service leaking when the binding is closed.

No functional changes here.

BUG=651245
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation
TBR=brettw@chromium.org

Review-Url: https://codereview.chromium.org/2571323002
Cr-Commit-Position: refs/heads/master@{#439333}
(cherry picked from commit 7980a0e0ca7f5a6abda7e57ab28fbf8f845bfbf8)

Committed:
https://chromium.googlesource.com/chromium/src/+/225bb8d94ed0a406519a9935c657...
==========

[bshe, 2016-12-21 18:53:42]

Committed patchset #2 (id:20001) manually as
225bb8d94ed0a406519a9935c6577a2855aafed1 (presubmit successful).

[mthiesse, 2017-01-04 21:20:24]

A revert of this CL (patchset #2 id:20001) has been created in
https://codereview.chromium.org/2615723002/ by mthiesse@chromium.org.

The reason for reverting is: Causes crash on Chrome Beta 56.0.2924.51 .