app_list: Initialize more views in the initializer list.

ui/app_list/app_list_item_model.cc

Index: ui/app_list/app_list_item_model.cc
diff --git a/ui/app_list/app_list_item_model.cc b/ui/app_list/app_list_item_model.cc
index 6c052cb5f56c9c42f1fe1bbf3ec268a149c7ab93..82cfd32dfb8188c293a0e20f53659ad97777810e 100644
--- a/ui/app_list/app_list_item_model.cc
+++ b/ui/app_list/app_list_item_model.cc
@@ -16,14 +16,15 @@ AppListItemModel::~AppListItemModel() {
 
 void AppListItemModel::SetIcon(const SkBitmap& icon) {
   icon_ = icon;
-  FOR_EACH_OBSERVER(AppListItemModelObserver, observers_,
-                    ItemIconChanged());
+  FOR_EACH_OBSERVER(AppListItemModelObserver, observers_, ItemIconChanged());
 }
 
 void AppListItemModel::SetTitle(const std::string& title) {
+  if (title_ == title)
+    return;
+
   title_ = title;
-  FOR_EACH_OBSERVER(AppListItemModelObserver, observers_,
-                    ItemTitleChanged());
+  FOR_EACH_OBSERVER(AppListItemModelObserver, observers_, ItemTitleChanged());
 }
 
 void AppListItemModel::SetHighlighted(bool highlighted) {
@@ -31,7 +32,8 @@ void AppListItemModel::SetHighlighted(bool highlighted) {
     return;
 
   highlighted_ = highlighted;
-  FOR_EACH_OBSERVER(AppListItemModelObserver, observers_,
+  FOR_EACH_OBSERVER(AppListItemModelObserver,
+                    observers_,
                     ItemHighlightedChanged());
 }