[NTP Snippets] SnippetsBridge: register as SnippetsObserver only when we get a Java observer

[NTP Snippets] SnippetsBridge: register as SnippetsObserver only when we get a Java observer
since before, there's no point.

While we're here, also remove the NTPSnippetsService* params from the observer methods, since nobody uses them.

BUG=none

Committed: https://crrev.com/d26b1bf2a6701bf576c909afd0075c450aeca392
Cr-Commit-Position: refs/heads/master@{#385798}

[Marc Treib, 2016-04-07 14:24:56]

treib@chromium.org changed reviewers:
+ bauerb@chromium.org

[Marc Treib, 2016-04-07 14:24:57]

One more :)  PTAL!

[Bernhard Bauer, 2016-04-07 14:49:28]

lgtm

[Marc Treib, 2016-04-07 15:52:24]

The CQ bit was checked by treib@chromium.org

[Marc Treib, 2016-04-07 15:52:24]

The patchset sent to the CQ was uploaded after l-g-t-m from bauerb@chromium.org
Link to the patchset: https://codereview.chromium.org/1869023002/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2016-04-07 15:53:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1869023002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1869023002/20001

[commit-bot: I haz the power, 2016-04-07 17:52:09]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-07 17:54:19]

Description was changed from

==========
[NTP Snippets] SnippetsBridge: register as SnippetsObserver only when we get a
Java observer
since before, there's no point.

While we're here, also remove the NTPSnippetsService* params from the observer
methods, since nobody uses them.

BUG=none
==========

to

==========
[NTP Snippets] SnippetsBridge: register as SnippetsObserver only when we get a
Java observer
since before, there's no point.

While we're here, also remove the NTPSnippetsService* params from the observer
methods, since nobody uses them.

BUG=none

Committed: https://crrev.com/d26b1bf2a6701bf576c909afd0075c450aeca392
Cr-Commit-Position: refs/heads/master@{#385798}
==========

[commit-bot: I haz the power, 2016-04-07 17:54:20]

Patchset 2 (id:??) landed as
https://crrev.com/d26b1bf2a6701bf576c909afd0075c450aeca392
Cr-Commit-Position: refs/heads/master@{#385798}