MacViews: Implement event monitoring for a specific window (Reland)

ui/events/test/event_generator.h

Index: ui/events/test/event_generator.h
diff --git a/ui/events/test/event_generator.h b/ui/events/test/event_generator.h
index cefecbd1b7b1c419173f4042ce02915b6c77a7a9..138f9ae8a2e0edf280b09edaee9747603c22c551 100644
--- a/ui/events/test/event_generator.h
+++ b/ui/events/test/event_generator.h
@@ -129,6 +129,13 @@ class EventGenerator {
   void set_async(bool async) { async_ = async; }
   bool async() const { return async_; }
 
+  // Dispatch events through the application instead of directly to the
+  // target window. Currently only supported on Mac.
+  void set_targeting_application(bool targeting_application) {
+    targeting_application_ = targeting_application;
+  }
+  bool targeting_application() const { return targeting_application_; }
+
   // Resets the event flags bitmask.
   void set_flags(int flags) { flags_ = flags; }
   int flags() const { return flags_; }
@@ -383,6 +390,7 @@ class EventGenerator {
   std::list<Event*> pending_events_;
   // Set to true to cause events to be posted asynchronously.
   bool async_;
+  bool targeting_application_;
   scoped_ptr<base::TickClock> tick_clock_;
 
   DISALLOW_COPY_AND_ASSIGN(EventGenerator);