Notificaitons refactor step 2

ui/message_center/message_simple_view.cc

Index: ui/message_center/message_simple_view.cc
diff --git a/ui/message_center/message_simple_view.cc b/ui/message_center/message_simple_view.cc
index 94e138422cba77b351aeef4ea3736a9dea1dc648..644c86d4d730657c325d71b2680ebd0663b4fd38 100644
--- a/ui/message_center/message_simple_view.cc
+++ b/ui/message_center/message_simple_view.cc
@@ -21,9 +21,8 @@ const SkColor kNotificationColor = SkColorSetRGB(0xfe, 0xfe, 0xfe);
 const SkColor kNotificationReadColor = SkColorSetRGB(0xfa, 0xfa, 0xfa);
 
 MessageSimpleView::MessageSimpleView(
-    NotificationList::Delegate* list_delegate,
-    const Notification& notification)
-    : MessageView(list_delegate, notification) {
+    NotificationList::Delegate* list_delegate)
+    : MessageView(list_delegate) {
   views::ImageButton* close = new views::ImageButton(this);
   close->SetImage(
       views::CustomButton::STATE_NORMAL,
@@ -59,20 +58,22 @@ gfx::Size MessageSimpleView::GetPreferredSize() {
   return size;
 }
 
-void MessageSimpleView::SetUpView() {
+void MessageSimpleView::SetUpView(const Notification& notification) {
+  MessageView::SetUpView(notification);
+
   views::ImageView* icon = new views::ImageView;
   icon->SetImageSize(
       gfx::Size(kWebNotificationIconSize, kWebNotificationIconSize));
-  icon->SetImage(notification().primary_icon);
+  icon->SetImage(notification.primary_icon());
 
-  views::Label* title = new views::Label(notification().title);
+  views::Label* title = new views::Label(notification.title());
   title->SetHorizontalAlignment(gfx::ALIGN_LEFT);
   title->SetFont(title->font().DeriveFont(0, gfx::Font::BOLD));
-  views::Label* message = new views::Label(notification().message);
+  views::Label* message = new views::Label(notification.message());
   message->SetHorizontalAlignment(gfx::ALIGN_LEFT);
   message->SetMultiLine(true);
 
-  SkColor bg_color = notification().is_read ?
+  SkColor bg_color = notification.is_read() ?
       kNotificationReadColor : kNotificationColor;
   content_view_.reset(new views::View);
   content_view_->set_background(