Revert of Only release the pointer lock when the RenderWidgetHost being destroyed

Revert of Only release the pointer lock when the RenderWidgetHost being destroyed (patchset #1 id:1 of https://codereview.chromium.org/2760343002/ )

Reason for revert:
Looks like this breaks PointerLockBrowserTest.PointerLockChildFrameDetached: https://uberchromegw.corp.google.com/i/chromium.memory/builders/Mac%20ASan%2064%20Tests%20%281%29/builds/28142

Original issue's description:
> Only release the pointer lock when the RenderWidgetHost being destroyed
> is the one holding the pointer lock.
> 
> This fixes a crash where the WebContents would stop tracking which
> RenderWidgetHost was holding the pointer lock.
> 
> BUG=703284
> 
> Review-Url: https://codereview.chromium.org/2760343002
> Cr-Commit-Position: refs/heads/master@{#458446}
> Committed: https://chromium.googlesource.com/chromium/src/+/bf846a94da5c2b4f8ff93a7942d3d50799381675

TBR=creis@chromium.org,alexmos@chromium.org,lfg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=703284
Review-Url: https://codereview.chromium.org/2763953003
Cr-Commit-Position: refs/heads/master@{#458539}
Committed: https://chromium.googlesource.com/chromium/src/+/a2fda5591832a96af3146f6a3db8cb9b947c2a86

[dgozman, 2017-03-21 20:47:21]

The CQ bit was checked by dgozman@chromium.org

[dgozman, 2017-03-21 20:47:22]

Created Revert of Only release the pointer lock when the RenderWidgetHost being
destroyed

[commit-bot: I haz the power, 2017-03-21 20:47:49]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-21 20:49:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490129241771140, "parent_rev":
"33e831e372e9e496c175b4cdcc0ebaa6d04502e8", "commit_rev":
"a2fda5591832a96af3146f6a3db8cb9b947c2a86"}

[commit-bot: I haz the power, 2017-03-21 20:49:52]

Description was changed from

==========
Revert of Only release the pointer lock when the RenderWidgetHost being
destroyed (patchset #1 id:1 of https://codereview.chromium.org/2760343002/ )

Reason for revert:
Looks like this breaks PointerLockBrowserTest.PointerLockChildFrameDetached:
https://uberchromegw.corp.google.com/i/chromium.memory/builders/Mac%20ASan%20...

Original issue's description:
> Only release the pointer lock when the RenderWidgetHost being destroyed
> is the one holding the pointer lock.
> 
> This fixes a crash where the WebContents would stop tracking which
> RenderWidgetHost was holding the pointer lock.
> 
> BUG=703284
> 
> Review-Url: https://codereview.chromium.org/2760343002
> Cr-Commit-Position: refs/heads/master@{#458446}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bf846a94da5c2b4f8ff93a7942d3...

TBR=creis@chromium.org,alexmos@chromium.org,lfg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=703284
==========

to

==========
Revert of Only release the pointer lock when the RenderWidgetHost being
destroyed (patchset #1 id:1 of https://codereview.chromium.org/2760343002/ )

Reason for revert:
Looks like this breaks PointerLockBrowserTest.PointerLockChildFrameDetached:
https://uberchromegw.corp.google.com/i/chromium.memory/builders/Mac%20ASan%20...

Original issue's description:
> Only release the pointer lock when the RenderWidgetHost being destroyed
> is the one holding the pointer lock.
> 
> This fixes a crash where the WebContents would stop tracking which
> RenderWidgetHost was holding the pointer lock.
> 
> BUG=703284
> 
> Review-Url: https://codereview.chromium.org/2760343002
> Cr-Commit-Position: refs/heads/master@{#458446}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bf846a94da5c2b4f8ff93a7942d3...

TBR=creis@chromium.org,alexmos@chromium.org,lfg@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=703284

Review-Url: https://codereview.chromium.org/2763953003
Cr-Commit-Position: refs/heads/master@{#458539}
Committed:
https://chromium.googlesource.com/chromium/src/+/a2fda5591832a96af3146f6a3db8...
==========

[commit-bot: I haz the power, 2017-03-21 20:49:53]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/a2fda5591832a96af3146f6a3db8...

[lfg, 2017-03-21 21:06:11]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2764703004/ by lfg@chromium.org.

The reason for reverting is: Relanding with the test disabled on Mac..