Copy contents of ui/base/ios into ios/chrome/browser/ui/context_menu

ios/chrome/browser/ui/keyboard/hardware_keyboard_watcher_unittest.mm

Index: ios/chrome/browser/ui/keyboard/hardware_keyboard_watcher_unittest.mm
diff --git a/ios/chrome/browser/ui/keyboard/hardware_keyboard_watcher_unittest.mm b/ios/chrome/browser/ui/keyboard/hardware_keyboard_watcher_unittest.mm
index 6200e151ad0339a7d6df51274d7a2b995e91cad0..a820788d41ed8439f17c9f35c75787e2ea5cc21c 100644
--- a/ios/chrome/browser/ui/keyboard/hardware_keyboard_watcher_unittest.mm
+++ b/ios/chrome/browser/ui/keyboard/hardware_keyboard_watcher_unittest.mm
@@ -24,7 +24,17 @@ void PostKeyboardWillChangeNotification(CGRect beginFrame, CGRect endFrame) {
                   }];
 }
 
-typedef PlatformTest HardwareKeyboardWatcherTest;
+class HardwareKeyboardWatcherTest : public PlatformTest {
+ public:
+  HardwareKeyboardWatcherTest() {
+    _window.reset(
+        [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]);
+    [_window makeKeyAndVisible];
+  }
+
+ protected:
+  base::scoped_nsobject<UIWindow> _window;
+};
 
 TEST_F(HardwareKeyboardWatcherTest, AccessoryViewNotInHierarchy_NoHistogram) {
   base::HistogramTester histogram_tester;