Simplifies the structure of app_list search a bit.

ui/app_list/search_result.cc

Index: ui/app_list/search_result.cc
diff --git a/ui/app_list/search_result.cc b/ui/app_list/search_result.cc
index 653d08950d9a81911a5b4e2f8560c3ad6b518ff2..f12b68ea9cd266fa64126b5d9a47f17db8bc77f8 100644
--- a/ui/app_list/search_result.cc
+++ b/ui/app_list/search_result.cc
@@ -97,6 +97,17 @@ void SearchResult::RemoveObserver(SearchResultObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
+scoped_ptr<SearchResult> SearchResult::Duplicate() {
+  NOTREACHED();
+  return scoped_ptr<SearchResult>();
+}
+
+SearchResultType SearchResult::GetType() {
+  // This is defined for testing, the actual search result must set the type.
+  NOTREACHED();
+  return SEARCH_RESULT_TYPE_BOUNDARY;
+}
+
 void SearchResult::Open(int event_flags) {
 }