Allow app list tiles to show search results in the experimental app list.

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 9df0e6c79cd3e29bdbf100bd2ec691869e8ac2e2..78f829930fd4775554a5d0aed1b4a881a4cb781d 100644
--- a/ui/app_list/search_result.cc
+++ b/ui/app_list/search_result.cc
@@ -25,10 +25,15 @@ SearchResult::Action::Action(const base::string16& label_text,
 SearchResult::Action::~Action() {}
 
 SearchResult::SearchResult()
-    : relevance_(0), is_installing_(false), percent_downloaded_(0) {
+    : relevance_(0),
+      display_type_(DISPLAY_LIST),
+      is_installing_(false),
+      percent_downloaded_(0) {
 }
 
-SearchResult::~SearchResult() {}
+SearchResult::~SearchResult() {
+  FOR_EACH_OBSERVER(SearchResultObserver, observers_, OnResultDestroying());
+}
 
 void SearchResult::SetIcon(const gfx::ImageSkia& icon) {
   icon_ = icon;