Revert of Implement the basic testing infrastructure for FindRequestManager.

Revert of Implement the basic testing infrastructure for FindRequestManager. (patchset #5 id:100001 of https://codereview.chromium.org/1891773002/ )

Reason for revert:
All three of the FindRequestManagerTests failed on Android: https://build.chromium.org/p/chromium.linux/builders/Android%20Tests/builds/25938

Original issue's description:
> Implement the basic testing infrastructure for FindRequestManager.
>
> This patch adds find_request_manager_browsertest.cc, along with a few find-in-page tests that can already be tested (though not yet with cross-process frames). There are also some new testing files and some small changes to FindRequestManager to facilitate testing.
>
> Design doc for multi-process find-in-page: https://docs.google.com/a/google.com/document/d/12S_6X2MWWLoyJslajcajL2ELU7zhodPxMOxa8Bg4Wg0/edit?usp=sharing
>
> BUG=457440
TBR=nasko@chromium.org,paulmeyer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=457440
Committed: https://crrev.com/ea191d3f445a566b2cb1d338d00cd43c6afee62e
Cr-Commit-Position: refs/heads/master@{#388816}

[jbudorick, 2016-04-21 18:17:58]

Created Revert of Implement the basic testing infrastructure for
FindRequestManager.

[commit-bot: I haz the power, 2016-04-21 18:18:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1910073002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1910073002/1

[commit-bot: I haz the power, 2016-04-21 18:19:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-22 19:36:13]

Description was changed from

==========
Revert of Implement the basic testing infrastructure for FindRequestManager.
(patchset #5 id:100001 of https://codereview.chromium.org/1891773002/ )

Reason for revert:
All three of the FindRequestManagerTests failed on Android:
https://build.chromium.org/p/chromium.linux/builders/Android%20Tests/builds/2...

Original issue's description:
> Implement the basic testing infrastructure for FindRequestManager.
> 
> This patch adds find_request_manager_browsertest.cc, along with a few
find-in-page tests that can already be tested (though not yet with cross-process
frames). There are also some new testing files and some small changes to
FindRequestManager to facilitate testing.
> 
> Design doc for multi-process find-in-page:
https://docs.google.com/a/google.com/document/d/12S_6X2MWWLoyJslajcajL2ELU7zh...
> 
> BUG=457440

TBR=nasko@chromium.org,paulmeyer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=457440
==========

to

==========
Revert of Implement the basic testing infrastructure for FindRequestManager.
(patchset #5 id:100001 of https://codereview.chromium.org/1891773002/ )

Reason for revert:
All three of the FindRequestManagerTests failed on Android:
https://build.chromium.org/p/chromium.linux/builders/Android%20Tests/builds/2...

Original issue's description:
> Implement the basic testing infrastructure for FindRequestManager.
>
> This patch adds find_request_manager_browsertest.cc, along with a few
find-in-page tests that can already be tested (though not yet with cross-process
frames). There are also some new testing files and some small changes to
FindRequestManager to facilitate testing.
>
> Design doc for multi-process find-in-page:
https://docs.google.com/a/google.com/document/d/12S_6X2MWWLoyJslajcajL2ELU7zh...
>
> BUG=457440

TBR=nasko@chromium.org,paulmeyer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=457440

Committed: https://crrev.com/ea191d3f445a566b2cb1d338d00cd43c6afee62e
Cr-Commit-Position: refs/heads/master@{#388816}
==========

[commit-bot: I haz the power, 2016-04-22 19:36:14]

Patchset 1 (id:??) landed as
https://crrev.com/ea191d3f445a566b2cb1d338d00cd43c6afee62e
Cr-Commit-Position: refs/heads/master@{#388816}