Save and restore State for ShellWindows, including panels

chrome/renderer/resources/extensions/app_window_custom_bindings.js

Index: chrome/renderer/resources/extensions/app_window_custom_bindings.js
diff --git a/chrome/renderer/resources/extensions/app_window_custom_bindings.js b/chrome/renderer/resources/extensions/app_window_custom_bindings.js
index 83322cf841586f43f8cbdaef419d9a36b8663888..a2a5af1634e42cecf22de1b76a4fe45db3d19b11 100644
--- a/chrome/renderer/resources/extensions/app_window_custom_bindings.js
+++ b/chrome/renderer/resources/extensions/app_window_custom_bindings.js
@@ -122,9 +122,9 @@ appWindow.registerCustomHook(function(bindingsAPI) {
       id: params.id || '',
       bounds: { left: params.bounds.left, top: params.bounds.top,
                 width: params.bounds.width, height: params.bounds.height },
-      fullscreen: false,
-      minimized: false,
-      maximized: false
+      fullscreen: params.fullscreen,
+      minimized: params.minimized,
+      maximized: params.maximized
     };
     chromeHidden.currentAppWindow = new AppWindow;
   });