diff --git a/chrome/chrome.d.ts b/chrome/chrome.d.ts
index 23eb24bef9..19d5c4d0bd 100755
--- a/chrome/chrome.d.ts
+++ b/chrome/chrome.d.ts
@@ -43,6 +43,37 @@ declare module chrome.alarms {
     var onAlarm: AlarmEvent;
 }
 
+/**
+ * Use the chrome.browser API to interact with the Chrome browser associated with 
+ * the current application and Chrome profile. 
+ */
+declare module chrome.browser {
+    interface Options {
+        /**
+         * The URL to navigate to when the new tab is initially opened.
+         */
+        url:string;
+    }
+    
+    /**
+     * Opens a new tab in a browser window associated with the current application 
+     * and Chrome profile. If no browser window for the Chrome profile is opened, 
+     * a new one is opened prior to creating the new tab. 
+     * @param options Configures how the tab should be opened. 
+     * @param callback Called when the tab was successfully 
+     * created, or failed to be created. If failed, runtime.lastError will be set.
+     */
+    export function openTab (options: Options, callback: () => void): void;
+     
+     /**
+     * Opens a new tab in a browser window associated with the current application 
+     * and Chrome profile. If no browser window for the Chrome profile is opened, 
+     * a new one is opened prior to creating the new tab. Since Chrome 42 only. 
+     * @param options Configures how the tab should be opened. 
+     */
+    export function openTab (options: Options): void;
+}
+
 ////////////////////
 // Bookmarks
 ////////////////////