Import chrome idl into third_party

third_party/chrome/idl/experimental_discovery.idl

Index: third_party/chrome/idl/experimental_discovery.idl
diff --git a/third_party/chrome/idl/experimental_discovery.idl b/third_party/chrome/idl/experimental_discovery.idl
new file mode 100644
index 0000000000000000000000000000000000000000..d8b4e5e3e873d8833f5bb984b3385509e4dafaed
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+++ b/third_party/chrome/idl/experimental_discovery.idl
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+// Copyright (c) 2012 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.
+
+namespace experimental.discovery {
+
+  dictionary SuggestDetails {
+    // The URL to suggest and that will be displayed in the new tab page under
+    // the recommended pane.
+    DOMString linkUrl;
+
+    // The linkified text. It should be relatively short.
+    DOMString linkText;
+
+    // The url of the image to use as a tile.
+    DOMString? urlImage;
+
+    // A score indicating how interesting that suggestion is. The value must be
+    // between 0 and 1. A suggestion with score 1 is twice as likely to be
+    // displayed than one with a score of 0.5. Defaults to 1.
+    // TODO: need minimum=0 and maximum=1.
+    double? score;
+  };
+
+  interface Functions {
+    // Suggests a URL for discovery.
+    // |details|: Detailed information on the URL to suggest.
+    static void suggest(SuggestDetails details);
+
+    // Removes a URL that was previously suggested for discovery by this
+    // extension.
+    // |linkUrl|: The URl to remove from discovery. Must be exactly the same as
+    // a linkUrl previously used on a call to suggest.
+    static void removeSuggestion(DOMString linkUrl);
+
+    // Clear all the URLs that were previously suggested for discovery by this
+    // extension.
+    static void clearAllSuggestions();
+  };
+};