Use Instant suggested match type for Instant temporary text.

chrome/browser/autocomplete/search_provider.h

Index: chrome/browser/autocomplete/search_provider.h
diff --git a/chrome/browser/autocomplete/search_provider.h b/chrome/browser/autocomplete/search_provider.h
index 16f669f3bc095ccbc56d6f9629670011c1f3eece..6427ae7d7226d1d1182c8c3d44ad6ef1c5dff909 100644
--- a/chrome/browser/autocomplete/search_provider.h
+++ b/chrome/browser/autocomplete/search_provider.h
@@ -73,6 +73,16 @@ class SearchProvider : public AutocompleteProvider,
                             const InstantSuggestion& suggestion);
   void ClearInstantSuggestion();
 
+  // Sets |match| to be a search for |query|, using the default search provider
+  // or current keyword provider (based on |is_keyword|). |original_query| and
+  // |accepted_suggestion| are used to fill in AQS (Assisted Query Stats).
+  // Returns true if successful (i.e., the |match| was filled in correctly).
+  bool GetSearchWhatYouTypedMatch(const string16& query,

[Mark P, 2013/04/09 23:59:11]

I find this somewhat misleading.  The match you're returning is not completely
populated correctly for use.  For instance, relevance score is not initialized. 
You should either set it or revise this comment.

[sreeram, 2013/04/11 20:37:54]

Done.

+                                  const string16& original_query,
+                                  int accepted_suggestion,
+                                  bool is_keyword,
+                                  AutocompleteMatch* match);
+
   // AutocompleteProvider:
   virtual void Start(const AutocompleteInput& input,
                      bool minimal_changes) OVERRIDE;