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

ui/app_list/search_result.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 "ui/app_list/search_result.h"
 
 #include "ui/app_list/search_result_observer.h"
 
 namespace app_list {
 
 SearchResult::Action::Action(const gfx::ImageSkia& base_image,
                              const gfx::ImageSkia& hover_image,
                              const gfx::ImageSkia& pressed_image,
                              const base::string16& tooltip_text)
     : base_image(base_image),
       hover_image(hover_image),
       pressed_image(pressed_image),
       tooltip_text(tooltip_text) {}
 
 SearchResult::Action::Action(const base::string16& label_text,
                              const base::string16& tooltip_text)
     : tooltip_text(tooltip_text),
       label_text(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;
   FOR_EACH_OBSERVER(SearchResultObserver,
                     observers_,
                     OnIconChanged());
 }
 
 void SearchResult::SetActions(const Actions& sets) {
   actions_ = sets;
@@ skipping 42 matching lines @@
 }
 
 void SearchResult::InvokeAction(int action_index, int event_flags) {
 }
 
 ui::MenuModel* SearchResult::GetContextMenuModel() {
   return NULL;
 }
 
 }  // namespace app_list