Revert of Add LocationBar PageAction tests

Revert of Add LocationBar PageAction tests (patchset #4 id:80001 of https://codereview.chromium.org/512693003/)

Reason for revert:
Flaky test
see the following runs where the test fails even with 3 retries

http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9713
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9656
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9574
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9511
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9405
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9367
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9252
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9253
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9223
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_swarming/builds/9213


Original issue's description:
> Add LocationBar PageAction tests
> 
> Page actions in the location bar have been somewhat loosely tested as a side-
> effect of the page actions api testing, but (near as I can tell), we never
> explicity test the ui for page actions.
> 
> This is a problem because the extensions tests shouldn't care about the UI, and
> soon won't, since where the page actions are in the UI may change (i.e.,
> location bar vs toolbar).
> 
> Fix this by adding a few basic UI tests for page actions in the location bar.
> 
> BUG=408261
> 
> Committed: https://chromium.googlesource.com/chromium/src/+/0abaca08e99fa6671758a96829b99aa941696e41

TBR=finnur@chromium.org,sky@chromium.org,rdevlin.cronin@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=408261
Committed: https://crrev.com/6de6c6eaee01e8aa52e3e380fc2fcd1cc1ef2445
Cr-Commit-Position: refs/heads/master@{#293253}

[jam, 2014-09-04 03:25:05]

Created Revert of Add LocationBar PageAction tests

[commit-bot: I haz the power, 2014-09-04 03:26:12]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jam@chromium.org/537813002/1

[commit-bot: I haz the power, 2014-09-04 03:28:21]

Committed patchset #1 (id:1) as 854c5c5283ea112636689556a98fcd4155f1a81f

[commit-bot: I haz the power, 2014-09-10 03:29:35]

Patchset 1 (id:??) landed as
https://crrev.com/6de6c6eaee01e8aa52e3e380fc2fcd1cc1ef2445
Cr-Commit-Position: refs/heads/master@{#293253}