Added support for Google Chrome Notification API

API described at https://developer.chrome.com/extensions/notifications

chrome/chrome.d.ts

@@ -1232,6 +1232,68 @@ declare module chrome.management {
     var onEnabled: ManagementEnabledEvent;
 }
 
+////////////////////
+// Notifications
+// https://developer.chrome.com/extensions/notifications
+////////////////////
+declare module chrome.notifications {
+    interface ButtonOptions {
+        title: string;
+        iconUrl?: string;
+    }
+
+    interface ItemOptions {
+        title: string;
+        message: string;
+    }
+
+    interface NotificationOptions {
+        type?: string;
+        iconUrl?: string;
+        title?: string;
+        message?: string;
+        contextMessage?: string;
+        priority?: number;
+        eventTime?: number;
+        buttons?: Array<ButtonOptions>;
+        items?: Array<ItemOptions>;
+        progress?: number;
+        isClickable?: boolean;
+    }
+
+    interface OnClosed {
+        addListener(callback: (notificationId: string, byUser: boolean) => void): void;
+    }
+
+    interface OnClicked {
+        addListener(callback: (notificationId: string) => void): void;
+    }
+
+    interface OnButtonClicked {
+        addListener(callback: (notificationId: string, buttonIndex: number) => void): void;
+    }
+
+    interface OnPermissionLevelChanged {
+        addListener(callback: (level: string) => void): void;
+    }
+
+    interface OnShowSettings {
+        addListener(callback: Function): void;
+    }
+
+    export var onClosed: OnClosed;
+    export var onClicked: OnClicked;
+    export var onButtonClicked: OnButtonClicked;
+    export var onPermissionLevelChanged: OnPermissionLevelChanged;
+    export var onShowSettings: OnShowSettings;
+
+    export function create(notificationId: string, options: NotificationOptions, callback: (notificationId: string) => void): void;
+    export function update(notificationId: string, options: NotificationOptions, callback: (wasUpdated: boolean) => void): void;
+    export function clear(notificationId: string, callback: (wasCleared: boolean) => void): void;
+    export function getAll(callback: (notifications: any) => void): void;
+    export function getPermissionLevel(callback: (level: string) => void): void;
+}
+
 ////////////////////
 // Omnibox
 ////////////////////