Add a testing switch to override the query for other forms of browsing history

Add a testing switch to override the query for other forms of browsing history

The API to query other forms of browsing history is not ready yet. The query
done by web history service therefore currently always return false, i.e.
"no other forms of browsing history found in this account".

Until the API is ready, provide a switch for testing purposes that will
change this to always return true.

BUG=602629
Review URL: https://codereview.chromium.org/1884553002

Cr-Commit-Position: refs/heads/master@{#388753}
(cherry picked from commit 2b3e76a0b6974e86953e3786fad5ddafa59cd573)

Committed: https://chromium.googlesource.com/chromium/src/+/14ef220fa7d5e12accc0c64099d7f0b5a72ebcc2

[msramek, 2016-04-22 14:19:30]

Description was changed from

==========
Add a testing switch to override the query for other forms of browsing history

The API to query other forms of browsing history is not ready yet. The query
done by web history service therefore currently always return false, i.e.
"no other forms of browsing history found in this account".

Until the API is ready, provide a switch for testing purposes that will
change this to always return true.

BUG=602629

Review URL: https://codereview.chromium.org/1884553002

Cr-Commit-Position: refs/heads/master@{#388753}
(cherry picked from commit 2b3e76a0b6974e86953e3786fad5ddafa59cd573)
==========

to

==========
Add a testing switch to override the query for other forms of browsing history

The API to query other forms of browsing history is not ready yet. The query
done by web history service therefore currently always return false, i.e.
"no other forms of browsing history found in this account".

Until the API is ready, provide a switch for testing purposes that will
change this to always return true.

BUG=602629

Review URL: https://codereview.chromium.org/1884553002

Cr-Commit-Position: refs/heads/master@{#388753}
(cherry picked from commit 2b3e76a0b6974e86953e3786fad5ddafa59cd573)

Committed:
https://chromium.googlesource.com/chromium/src/+/14ef220fa7d5e12accc0c64099d7...
==========

[msramek, 2016-04-22 14:19:32]

Committed patchset #1 (id:1) manually as
14ef220fa7d5e12accc0c64099d7f0b5a72ebcc2.