Instant extended API: Make arrow up/down work.

chrome/browser/instant/instant_loader.h

 // 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.
 
 #ifndef CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 50 matching lines @@
 
   // Tells the preview page of the bounds of the omnibox dropdown (in screen
   // coordinates). This is used by the page to offset the results to avoid them
   // being covered by the omnibox dropdown.
   void SetOmniboxBounds(const gfx::Rect& bounds);
 
   // Tells the preview page about the available autocomplete results.
   void SendAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
 
+  // Tells the preview page that the user pressed the up or down key. |count|
+  // is a repeat count, negative for moving up, positive for moving down.
+  void OnUpOrDownKeyPressed(int count);
+
   // Releases the preview TabContents passing ownership to the caller. This
   // should be called when the preview is committed. Notifies the page but not
   // the delegate. |text| is the final omnibox text being committed. NOTE: The
   // caller should destroy this loader object right after this method, since
   // none of the other methods will work once the preview has been released.
   TabContents* ReleasePreviewContents(InstantCommitType type,
                                       const string16& text) WARN_UNUSED_RESULT;
 
   // The preview TabContents. The loader retains ownership. This will be
   // non-NULL until ReleasePreviewContents() is called.
@@ skipping 48 matching lines @@
   // Used to get notifications about renderers coming and going.
   content::NotificationRegistrar registrar_;
 
   // See comments on the getter above.
   scoped_refptr<history::HistoryAddPageArgs> last_navigation_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantLoader);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_