Revert of Use intersection observer to control frame throttling

Revert of Use intersection observer to control frame throttling (patchset #24 id:460001 of https://codereview.chromium.org/2272773002/ )

Reason for revert:
Speculative revert to fix failures in fast/loader/open-in-srcdoc-unload.html

Failed builds:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precise%20Leak/builds/1345
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precise%20Leak/builds/1346
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precise%20Leak/builds/1347

Error message:
fast/loader/open-in-srcdoc-unload.html failed unexpectedly (leak detected: ({"numberOfLiveActiveDOMObjects":[2,3]}))

Original issue's description:
> Use intersection observer to control frame throttling
>
> This patch removes the FrameView-specific code for computing viewport
> visibility in favor of registering an internal intersection observer.
>
> BUG=616519
>
> Committed: https://crrev.com/5d3d4c00320aadad4a044dcb0241b86fc184b114
> Cr-Commit-Position: refs/heads/master@{#428984}

TBR=ojan@chromium.org,dgrogan@chromium.org,haraken@chromium.org,szager@chromium.org,skyostil@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=616519
Committed: https://crrev.com/8036385ba33338a6ce38dc5ffc72fbbea12e79ae
Cr-Commit-Position: refs/heads/master@{#429000}

[please use gerrit instead, 2016-11-01 14:39:19]

The CQ bit was checked by rouslan@chromium.org

[please use gerrit instead, 2016-11-01 14:39:19]

Created Revert of Use intersection observer to control frame throttling

[commit-bot: I haz the power, 2016-11-01 14:39:33]

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, 2016-11-01 14:40:39]

Description was changed from

==========
Revert of Use intersection observer to control frame throttling (patchset #24
id:460001 of https://codereview.chromium.org/2272773002/ )

Reason for revert:
Speculative revert to fix failures in fast/loader/open-in-srcdoc-unload.html

Failed builds:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...

Error message:
fast/loader/open-in-srcdoc-unload.html failed unexpectedly (leak detected:
({"numberOfLiveActiveDOMObjects":[2,3]}))


Original issue's description:
> Use intersection observer to control frame throttling
> 
> This patch removes the FrameView-specific code for computing viewport
> visibility in favor of registering an internal intersection observer.
> 
> BUG=616519
> 
> Committed: https://crrev.com/5d3d4c00320aadad4a044dcb0241b86fc184b114
> Cr-Commit-Position: refs/heads/master@{#428984}

TBR=ojan@chromium.org,dgrogan@chromium.org,haraken@chromium.org,szager@chromi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=616519
==========

to

==========
Revert of Use intersection observer to control frame throttling (patchset #24
id:460001 of https://codereview.chromium.org/2272773002/ )

Reason for revert:
Speculative revert to fix failures in fast/loader/open-in-srcdoc-unload.html

Failed builds:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...

Error message:
fast/loader/open-in-srcdoc-unload.html failed unexpectedly (leak detected:
({"numberOfLiveActiveDOMObjects":[2,3]}))


Original issue's description:
> Use intersection observer to control frame throttling
> 
> This patch removes the FrameView-specific code for computing viewport
> visibility in favor of registering an internal intersection observer.
> 
> BUG=616519
> 
> Committed: https://crrev.com/5d3d4c00320aadad4a044dcb0241b86fc184b114
> Cr-Commit-Position: refs/heads/master@{#428984}

TBR=ojan@chromium.org,dgrogan@chromium.org,haraken@chromium.org,szager@chromi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=616519
==========

[commit-bot: I haz the power, 2016-11-01 14:40:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-01 14:42:08]

Description was changed from

==========
Revert of Use intersection observer to control frame throttling (patchset #24
id:460001 of https://codereview.chromium.org/2272773002/ )

Reason for revert:
Speculative revert to fix failures in fast/loader/open-in-srcdoc-unload.html

Failed builds:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...

Error message:
fast/loader/open-in-srcdoc-unload.html failed unexpectedly (leak detected:
({"numberOfLiveActiveDOMObjects":[2,3]}))


Original issue's description:
> Use intersection observer to control frame throttling
> 
> This patch removes the FrameView-specific code for computing viewport
> visibility in favor of registering an internal intersection observer.
> 
> BUG=616519
> 
> Committed: https://crrev.com/5d3d4c00320aadad4a044dcb0241b86fc184b114
> Cr-Commit-Position: refs/heads/master@{#428984}

TBR=ojan@chromium.org,dgrogan@chromium.org,haraken@chromium.org,szager@chromi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=616519
==========

to

==========
Revert of Use intersection observer to control frame throttling (patchset #24
id:460001 of https://codereview.chromium.org/2272773002/ )

Reason for revert:
Speculative revert to fix failures in fast/loader/open-in-srcdoc-unload.html

Failed builds:
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...
https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Precis...

Error message:
fast/loader/open-in-srcdoc-unload.html failed unexpectedly (leak detected:
({"numberOfLiveActiveDOMObjects":[2,3]}))

Original issue's description:
> Use intersection observer to control frame throttling
>
> This patch removes the FrameView-specific code for computing viewport
> visibility in favor of registering an internal intersection observer.
>
> BUG=616519
>
> Committed: https://crrev.com/5d3d4c00320aadad4a044dcb0241b86fc184b114
> Cr-Commit-Position: refs/heads/master@{#428984}

TBR=ojan@chromium.org,dgrogan@chromium.org,haraken@chromium.org,szager@chromi...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=616519

Committed: https://crrev.com/8036385ba33338a6ce38dc5ffc72fbbea12e79ae
Cr-Commit-Position: refs/heads/master@{#429000}
==========

[commit-bot: I haz the power, 2016-11-01 14:42:09]

Patchset 1 (id:??) landed as
https://crrev.com/8036385ba33338a6ce38dc5ffc72fbbea12e79ae
Cr-Commit-Position: refs/heads/master@{#429000}

[please use gerrit instead, 2016-11-01 16:13:10]

The bot is fixed. Speculation was correct.