Revert of Require WebLocalFrame to be created with a non-null client

Revert of Require WebLocalFrame to be created with a non-null client (patchset #5 id:80001 of https://codereview.chromium.org/2369613003/ )

Reason for revert:
Also just testing.

Original issue's description:
> Require WebLocalFrame to be created with a non-null client
> 
> This simplifies the invariants around WebLocalFrames in Blink:
> the client is only ever null once the frame is detached. In
> theory, this should allow the removal of a bunch of random
> WebFrameClient null checks.
> 
> BUG=none
> 
> Committed: https://crrev.com/9f8e2f611e44753f7d8de5a2a6716bd030bc7283
> Cr-Commit-Position: refs/heads/master@{#421832}

TBR=jochen@chromium.org,dglazkov@chromium.org,esprehn@chromium.org,liberato@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=none

[dcheng, 2016-10-01 02:10:11]

Created Revert of Require WebLocalFrame to be created with a non-null client

[dcheng, 2016-10-01 02:10:42]

Description was changed from

==========
Revert of Require WebLocalFrame to be created with a non-null client (patchset
#5 id:80001 of https://codereview.chromium.org/2369613003/ )

Reason for revert:
Also just testing.

Original issue's description:
> Require WebLocalFrame to be created with a non-null client
> 
> This simplifies the invariants around WebLocalFrames in Blink:
> the client is only ever null once the frame is detached. In
> theory, this should allow the removal of a bunch of random
> WebFrameClient null checks.
> 
> BUG=none
> 
> Committed: https://crrev.com/9f8e2f611e44753f7d8de5a2a6716bd030bc7283
> Cr-Commit-Position: refs/heads/master@{#421832}

TBR=jochen@chromium.org,dglazkov@chromium.org,esprehn@chromium.org,liberato@c...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=none
==========

to

==========
Revert of Require WebLocalFrame to be created with a non-null client (patchset
#5 id:80001 of https://codereview.chromium.org/2369613003/ )

Reason for revert:
Also just testing.

Original issue's description:
> Require WebLocalFrame to be created with a non-null client
> 
> This simplifies the invariants around WebLocalFrames in Blink:
> the client is only ever null once the frame is detached. In
> theory, this should allow the removal of a bunch of random
> WebFrameClient null checks.
> 
> BUG=none
> 
> Committed: https://crrev.com/9f8e2f611e44753f7d8de5a2a6716bd030bc7283
> Cr-Commit-Position: refs/heads/master@{#421832}

TBR=jochen@chromium.org,dglazkov@chromium.org,esprehn@chromium.org,liberato@c...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=none
==========

[dcheng, 2016-10-01 02:10:42]

dcheng@chromium.org changed reviewers:
- dglazkov@chromium.org, esprehn@chromium.org, jochen@chromium.org,
liberato@chromium.org

[dcheng, 2016-10-01 02:10:48]

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

[commit-bot: I haz the power, 2016-10-01 02:10:57]

Dry run: 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, 2016-10-01 02:14:03]

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

[commit-bot: I haz the power, 2016-10-01 02:14:04]

Dry run: Try jobs failed on following builders:
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)