Add chrome.searchEnginesPrivate API and Search Settings page.

chrome/common/extensions/api/search_engines_private.idl

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Use the <code>chrome.searchEnginesPrivate</code> API to get or set
+// preferences from the settings UI.
+namespace searchEnginesPrivate {

[not at google - send to devlin, 2015/04/22 19:32:59]

How will this interact with the search engine overrides API? I would have
thought (?) that you may need an extension ID in here as well, if it was
installed from an extension.

[Oren Blasberg, 2015/04/22 22:36:11]

Hmm, where is that API located? I can't find it anywhere in the code (though it
sounds vaguely familiar).

[not at google - send to devlin, 2015/04/22 22:43:51]

It's called "chrome_settings_overrides", implemented in
settings_overrides_handler.h.

[Oren Blasberg, 2015/04/22 22:59:19]

Ah, I see. Yes, we will likely iterate on the searchEnginesPrivate API to add
more things, including things like (optional) extension ID, as well as methods
for hotword search availability, and custom search engines. 

+
+  dictionary SearchEngine {
+    // The unique ID of the engine in the list.

[stevenjb, 2015/04/22 19:46:30]

'The unique identifier for the search engine.'

[Oren Blasberg, 2015/04/23 17:05:08]

Done.

+    DOMString guid;
+
+    // The name of the engine.
+    DOMString name;
+
+    // Whether the engine is default.

[stevenjb, 2015/04/22 19:46:30]

'Whether the engine is the default search engine'
(i.e. not whether or not it is in the default list, that is implicit).

[Oren Blasberg, 2015/04/23 17:05:08]

Done.

+    boolean isDefault;
+  };
+
+  callback SearchEnginesCallback = void (SearchEngine[] engines);
+
+  interface Functions {
+    // Gets an array of all the default (not custom) search engines.
+    static void getDefaultSearchEngines(SearchEnginesCallback callback);
+
+    // Sets the default search engine.
+    static void setDefaultSearchEngine(DOMString guid);

[stevenjb, 2015/04/22 19:46:30]

See discussion in API doc

[Oren Blasberg, 2015/04/23 17:05:08]

Done.

+  };
+
+  interface Events {
+    // Fires when the list of engines or the default engine changes.
+    static void onSearchEnginesChanged(SearchEngine[] engines);

[stevenjb, 2015/04/22 19:46:30]

See discussion in API doc

[Oren Blasberg, 2015/04/23 17:05:08]

Done.

+  };
+};