[NTP] Do not force offline version when opening non-download snippets.

[NTP] Do not force offline version when opening non-download snippets.

Previously we always opened an offline page, if there was one. This CL
simply opens the URL for non-download snippets and then Offline Pages
decide whether to open its offline page. For Downloads nothing changed.

BUG=668485
Review-Url: https://codereview.chromium.org/2525323003
Cr-Commit-Position: refs/heads/master@{#434445}
(cherry picked from commit 6f538029f3659bf667470deca0b22abdcd7cafbd)

Committed: https://chromium.googlesource.com/chromium/src/+/c9a10dcad458b7a05ca295a25ae621c30f264f05

[Marc Treib, 2016-12-01 14:31:27]

Description was changed from

==========
[NTP] Do not force offline version when opening non-download snippets.

Previously we always opened an offline page, if there was one. This CL
simply opens the URL for non-download snippets and then Offline Pages
decide whether to open its offline page. For Downloads nothing changed.

BUG=668485

Review-Url: https://codereview.chromium.org/2525323003
Cr-Commit-Position: refs/heads/master@{#434445}
(cherry picked from commit 6f538029f3659bf667470deca0b22abdcd7cafbd)
==========

to

==========
[NTP] Do not force offline version when opening non-download snippets.

Previously we always opened an offline page, if there was one. This CL
simply opens the URL for non-download snippets and then Offline Pages
decide whether to open its offline page. For Downloads nothing changed.

BUG=668485

Review-Url: https://codereview.chromium.org/2525323003
Cr-Commit-Position: refs/heads/master@{#434445}
(cherry picked from commit 6f538029f3659bf667470deca0b22abdcd7cafbd)

Committed:
https://chromium.googlesource.com/chromium/src/+/c9a10dcad458b7a05ca295a25ae6...
==========

[Marc Treib, 2016-12-01 14:31:28]

Committed patchset #1 (id:1) manually as
c9a10dcad458b7a05ca295a25ae621c30f264f05.

[whywhat, 2016-12-02 07:28:16]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/2541123005/ by avayvod@chromium.org.

The reason for reverting is: Broke the official 56 build:
https://bugs.chromium.org/p/chromium/issues/detail?id=670559

Seems like https://codereview.chromium.org/2514343003 has to be merged before
(doesn't seem to be in the 56 branch according to
https://chromium.googlesource.com/chromium/src/+/56.0.2924.14/chrome/android/...).