MacViews: Move ui_control_mac's anon::SynthesizeKeyEvent() to cocoa_test_event_utils.h

ui/events/test/cocoa_test_event_utils.h

Index: ui/events/test/cocoa_test_event_utils.h
diff --git a/ui/events/test/cocoa_test_event_utils.h b/ui/events/test/cocoa_test_event_utils.h
index 76c6a32fec5dd424f20ed164cbdacf696229d375..6f6beb0337da59eda6a7ce5eba7e55f308e60c85 100644
--- a/ui/events/test/cocoa_test_event_utils.h
+++ b/ui/events/test/cocoa_test_event_utils.h
@@ -10,6 +10,7 @@
 #import <objc/objc-class.h>
 
 #include "base/basictypes.h"
+#include "ui/events/keycodes/keyboard_codes.h"
 
 namespace cocoa_test_event_utils {
 
@@ -48,6 +49,15 @@ NSEvent* EnterExitEventWithType(NSEventType event_type);
 // Return an "other" event with the given type.
 NSEvent* OtherEventWithType(NSEventType event_type);
 
+// Time interval since system startup. Tests shouldn't rely on this.
+NSTimeInterval TimeIntervalSinceSystemStartup();
+
+// Creates a key event in a particular window.
+NSEvent* SynthesizeKeyEvent(NSWindow* window,
+                            bool keyDown,
+                            ui::KeyboardCode keycode,
+                            NSUInteger flags);
+
 }  // namespace cocoa_test_event_utils
 
 #endif  // UI_EVENTS_TEST_COCOA_TEST_EVENT_UTILS_H_