Instant extended API: Make arrow up/down work.

chrome/browser/instant/instant_loader.cc

 // 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.
 
 #include "chrome/browser/instant/instant_loader.h"
 
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/instant/instant_loader_delegate.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 291 matching lines @@
 }
 
 void InstantLoader::SendAutocompleteResults(
     const std::vector<InstantAutocompleteResult>& results) {
   content::RenderViewHost* rvh =
       preview_contents_->web_contents()->GetRenderViewHost();
   rvh->Send(new ChromeViewMsg_SearchBoxAutocompleteResults(rvh->GetRoutingID(),
                                                            results));
 }
 
+void InstantLoader::OnUpOrDownKeyPressed(int count) {
+  content::RenderViewHost* rvh =
+      preview_contents_->web_contents()->GetRenderViewHost();
+  rvh->Send(new ChromeViewMsg_SearchBoxUpOrDownKeyPressed(rvh->GetRoutingID(),
+                                                          count));
+}
+
 TabContents* InstantLoader::ReleasePreviewContents(InstantCommitType type,
                                                    const string16& text) {
   content::RenderViewHost* rvh =
       preview_contents_->web_contents()->GetRenderViewHost();
   if (type == INSTANT_COMMIT_PRESSED_ENTER)
     rvh->Send(new ChromeViewMsg_SearchBoxSubmit(rvh->GetRoutingID(), text));
   else
     rvh->Send(new ChromeViewMsg_SearchBoxCancel(rvh->GetRoutingID(), text));
   CleanupPreviewContents();
   return preview_contents_.release();
@@ skipping 72 matching lines @@
                                            TabContents* new_tc) {
   DCHECK(old_tc == preview_contents_);
   CleanupPreviewContents();
   // We release here without deleting so that the caller still has the
   // responsibility for deleting the TabContents.
   ignore_result(preview_contents_.release());
   preview_contents_.reset(new_tc);
   SetupPreviewContents();
   loader_delegate_->SwappedTabContents(this);
 }