MacViews: Implement capture using NSEvent local+global monitors

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 7cb6afbbe2678e288d6032b5b7a95704dade6aad..e6026f96c4fcb6aec61efc674efd5f8130255180 100644
--- a/ui/views/widget/native_widget_mac_interactive_uitest.mm
+++ b/ui/views/widget/native_widget_mac_interactive_uitest.mm
@@ -28,15 +28,6 @@ class NativeWidgetMacInteractiveUITest
                       : CreateTopLevelPlatformWidget();
   }
 
-  // Overridden form testing::Test:
-  virtual void SetUp() {
-    // Unbundled applications (those without Info.plist) default to
-    // NSApplicationActivationPolicyProhibited, which prohibits the application
-    // obtaining key status.
-    [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
-    WidgetTest::SetUp();
-  }
-
  protected:
   scoped_ptr<Observer> observer_;
   int activationCount_;