MacViews: Fix ViewTest.HandleAccelerator by faking window activation

ui/views/widget/native_widget_mac_interactive_uitest.mm

Index: ui/views/widget/native_widget_mac_interactive_uitest.mm
diff --git a/ui/views/widget/native_widget_mac_interactive_uitest.mm b/ui/views/widget/native_widget_mac_interactive_uitest.mm
index 88d51e2382d7cd0f352f3b8450e796b5a7e34340..e8537ab9522e29750d5557222902f0f0418fc5f3 100644
--- a/ui/views/widget/native_widget_mac_interactive_uitest.mm
+++ b/ui/views/widget/native_widget_mac_interactive_uitest.mm
@@ -9,6 +9,7 @@
 #import "base/mac/mac_util.h"
 #import "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
+#include "ui/base/test/ui_controls.h"
 #import "ui/base/test/windowed_nsnotification_observer.h"
 #include "ui/views/test/test_widget_observer.h"
 #include "ui/views/test/widget_test.h"
@@ -25,7 +26,11 @@ class NativeWidgetMacInteractiveUITest
   class Observer;
 
   NativeWidgetMacInteractiveUITest()
-      : activationCount_(0), deactivationCount_(0) {}
+      : activationCount_(0), deactivationCount_(0) {
+    // TODO(tapted): Remove this when these are absorbed into Chrome's
+    // interactive_ui_tests target. See http://crbug.com/403679.
+    ui_controls::EnableUIControls();
+  }
 
   Widget* MakeWidget() {
     return GetParam() ? CreateTopLevelFramelessPlatformWidget()