[AiS] Add a new AutocompleteMatchType for Answers in Suggest.

chrome/browser/autocomplete/autocomplete_controller.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/autocomplete/autocomplete_controller.h"
 
 #include <set>
 #include <string>
 
 #include "base/format_macros.h"
@@ skipping 62 matching lines @@
       return;
     }
     case AutocompleteMatchType::SEARCH_SUGGEST_PERSONALIZED: {
       *subtype = 35;
       return;
     }
     case AutocompleteMatchType::SEARCH_SUGGEST_PROFILE: {
       *subtype = 44;
       return;
     }
+    case AutocompleteMatchType::SEARCH_SUGGEST_ANSWER: {
+      *subtype = 70;
+      return;
+    }
     case AutocompleteMatchType::NAVSUGGEST: {
       // Do not set subtype here; subtype may have been set above.
       *type = 5;
       return;
     }
     case AutocompleteMatchType::SEARCH_WHAT_YOU_TYPED: {
       *subtype = 57;
       return;
     }
     case AutocompleteMatchType::URL_WHAT_YOU_TYPED: {
@@ skipping 550 matching lines @@
                         this, &AutocompleteController::ExpireCopiedEntries);
 }
 
 void AutocompleteController::StartStopTimer() {
   stop_timer_.Start(FROM_HERE,
                     stop_timer_duration_,
                     base::Bind(&AutocompleteController::Stop,
                                base::Unretained(this),
                                false));
 }