Update device permissions dialog ui for Chrome apps and extensions

extensions/browser/api/usb/usb_apitest.cc

Index: extensions/browser/api/usb/usb_apitest.cc
diff --git a/extensions/browser/api/usb/usb_apitest.cc b/extensions/browser/api/usb/usb_apitest.cc
index cfad67d1deedc413d6dd4e829fe08b4d46bbdfae..9057178f646da6c8bd096b54abd76301f8b53db8 100644
--- a/extensions/browser/api/usb/usb_apitest.cc
+++ b/extensions/browser/api/usb/usb_apitest.cc
@@ -107,7 +107,17 @@ class TestDevicePermissionsPrompt
 
   void ShowDialog() override { prompt()->SetObserver(this); }
 
-  void OnDevicesChanged() override {
+  void OnDeviceAdded(size_t index, const base::string16& device_name) override {
+    OnDevicesChanged();
+  }
+
+  void OnDeviceRemoved(size_t index,
+                       const base::string16& device_name) override {
+    OnDevicesChanged();
+  }
+
+ private:
+  void OnDevicesChanged() {
     for (size_t i = 0; i < prompt()->GetDeviceCount(); ++i) {
       prompt()->GrantDevicePermission(i);
       if (!prompt()->multiple()) {