Start delegating notifications to MessageCenter on Windows.

This is the next step.
MessageCeneterNotificationManager now creates MessageCenter and forwards
new notificaitons to it.

1. Upon chat with dewittj@, we decided to not trat MessageCenter as Singleton
since there are issues on process shutdown (MessageCenter should exist
while MessageCeneterNotificationManager does). Changes that.

2. MessageCeneterNotificationManager for now keeps a map of all displayed
Notification objects - to make sure NotificationDelegates are invoked and
Profiles are tracked.

3. Started to pass ExtensionId into as origin_id from Notification API, to
scope the notification updates to a specific app (bug 168924)

4. Additionally scoped update of notifications by profile, since in
multiprofile case the update was also not scoped by profile.

This does not yet render anything, since there is no rendering Observer
set for the MessageCenter. Will coordinate with Justin.

Next step would be to land a test for the add/update/remove logic,
and also move image download from Balloon_view_ash to NotificationUIManagerImpl,
where notifications wait until they are ready to be displayed.

BUG=168924,168605


Review URL: https://chromiumcodereview.appspot.com/11958025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@178352 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 4 insertions, 14 deletions

diff --git a/ui/message_center/message_center.cc b/ui/message_center/message_center.cc
index 6530005..c449a05 100644
--- a/ui/message_center/message_center.cc
+++ b/ui/message_center/message_center.cc
@@ -11,10 +11,9 @@
 namespace message_center {
 
 //------------------------------------------------------------------------------
-
-// static
-MessageCenter* MessageCenter::GetInstance() {
-  return Singleton<MessageCenter>::get();
+MessageCenter::MessageCenter()
+    : delegate_(NULL) {
+  notification_list_.reset(new NotificationList(this));
 }
 
 MessageCenter::~MessageCenter() {
@@ -178,11 +177,6 @@ void MessageCenter::Delegate::OnButtonClicked(const std::string& id,
 //------------------------------------------------------------------------------
 // Private.
 
-MessageCenter::MessageCenter()
-    : delegate_(NULL) {
-  notification_list_.reset(new NotificationList(this));
-}
-
 void MessageCenter::NotifyMessageCenterChanged(bool new_notification) {
   FOR_EACH_OBSERVER(Observer,
                     observer_list_,
diff --git a/ui/message_center/message_center.h b/ui/message_center/message_center.h
index f060114..53bb1d0 100644
--- a/ui/message_center/message_center.h
+++ b/ui/message_center/message_center.h
@@ -74,8 +74,7 @@ class MESSAGE_CENTER_EXPORT MessageCenter : public NotificationList::Delegate {
     virtual ~Delegate() {}
   };
 
-  static MessageCenter* GetInstance();
-
+  MessageCenter();
   virtual ~MessageCenter();
 
   // Called to set the delegate.  Generally called only once, except in tests.
@@ -148,9 +147,6 @@ class MESSAGE_CENTER_EXPORT MessageCenter : public NotificationList::Delegate {
   virtual NotificationList* GetNotificationList() OVERRIDE;
 
  private:
-  friend struct DefaultSingletonTraits<MessageCenter>;
-  MessageCenter();
-
   // Calls OnMessageCenterChanged on each observer.
   void NotifyMessageCenterChanged(bool new_notification);