Adds UI components for desktop notifications, including balloon view classes ...

chrome/common/notification_type.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_COMMON_NOTIFICATION_TYPE_H_
 #define CHROME_COMMON_NOTIFICATION_TYPE_H_
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
@@ skipping 707 matching lines @@
 
     // Sent by the resource dispatcher host when a resource is blocked.
     BLACKLIST_BLOCKED_RESOURCE,
 
     // Debugging ---------------------------------------------------------------
 
     // TODO(mpcomplete): Sent to diagnose a bug. Remove when fixed.
     // http://code.google.com/p/chromium/issues/detail?id=21201
     EXTENSION_PORT_DELETED_DEBUG,
 
+    // Desktop Notifications ---------------------------------------------------
+
+    // This notification is sent when a balloon is connected to a renderer
+    // process to render the balloon contents.  The source is a Source<Balloon>
+    // with a pointer to the the balloon.  A NOTIFY_BALLOON_DISCONNECTED is
+    // guaranteed before the source pointer becomes junk. No details expected.
+    NOTIFY_BALLOON_CONNECTED,
+
+    // This message is sent after a balloon is disconnected from the renderer
+    // process. The source is a Source<Balloon> with a pointer to the balloon
+    // (the pointer is usable). No details are expected.
+    NOTIFY_BALLOON_DISCONNECTED,
+
     // Count (must be last) ----------------------------------------------------
     // Used to determine the number of notification types.  Not valid as
     // a type parameter when registering for or posting notifications.
     NOTIFICATION_TYPE_COUNT
   };
 
   NotificationType(Type v) : value(v) {}
 
   bool operator==(NotificationType t) const { return value == t.value; }
   bool operator!=(NotificationType t) const { return value != t.value; }
 
   // Comparison to explicit enum values.
   bool operator==(Type v) const { return value == v; }
   bool operator!=(Type v) const { return value != v; }
 
   Type value;
 };
 
 inline bool operator==(NotificationType::Type a, NotificationType b) {
   return a == b.value;
 }
 inline bool operator!=(NotificationType::Type a, NotificationType b) {
   return a != b.value;
 }
 
 #endif  // CHROME_COMMON_NOTIFICATION_TYPE_H_