Ensure "Press Tab to search" is never displayed when instant extended is enabled.

chrome/browser/ui/omnibox/omnibox_edit_model.cc

Index: chrome/browser/ui/omnibox/omnibox_edit_model.cc
diff --git a/chrome/browser/ui/omnibox/omnibox_edit_model.cc b/chrome/browser/ui/omnibox/omnibox_edit_model.cc
index 7229b5872b8edab1725d8e7ffc6eeefa7fedeb0d..99120b647773f58688eaee3873548a6f8150586c 100644
--- a/chrome/browser/ui/omnibox/omnibox_edit_model.cc
+++ b/chrome/browser/ui/omnibox/omnibox_edit_model.cc
@@ -212,11 +212,15 @@ void OmniboxEditModel::SetInstantSuggestion(
       break;
 
     case INSTANT_COMPLETE_REPLACE:
+      const bool save_original_selection = !has_temporary_text_;

[sky, 2013/01/11 00:15:57]

nit: use {} since you're adding a variable only for this section.

[beaudoin, 2013/01/13 20:02:39]

Done.

       view_->SetInstantSuggestion(string16());
       has_temporary_text_ = true;
       is_temporary_text_set_by_instant_ = true;
-      view_->SetWindowTextAndCaretPos(suggestion.text, suggestion.text.size(),
-                                      false, false);
+      // Instant suggestions are never a keyword.
+      keyword_ = string16();
+      is_keyword_hint_ = false;
+      view_->OnTemporaryTextMaybeChanged(suggestion.text,
+                                         save_original_selection);
       break;
   }
 }