Support double-tap to click in touch accessibility controller.

ui/aura/test/event_generator.h

Index: ui/aura/test/event_generator.h
diff --git a/ui/aura/test/event_generator.h b/ui/aura/test/event_generator.h
index 29832b14f11aabd48f7e7cb508831996c4ddc317..4791593ab75b01c442894563b8375504d1ee8daa 100644
--- a/ui/aura/test/event_generator.h
+++ b/ui/aura/test/event_generator.h
@@ -11,14 +11,11 @@
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/time/time.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/point.h"
 
-namespace base {
-class TimeDelta;
-}
-
 namespace ui {
 class Event;
 class EventProcessor;
@@ -317,6 +314,18 @@ class EventGenerator {
     current_host_ = host;
   }
 
+  // If this is called, simulated time will be used as the time for all
+  // events, rather than the current time.
+  void UseSimulatedTime();

[sky, 2014/06/06 16:35:25]

Instead of UseSimulateTime/Advance... how about a SetClock(scoped_ptr<Clock>)?
Less API and lets you accomplish what you have here. See SimpleTestClock for the
test one you would use.

+
+  // If UseSimulatedTime has been called, advance the simulated time by
+  // the given delta.
+  void AdvanceSimulatedTimeBy(base::TimeDelta delta);
+
+  // Return the current time - if UseSimulatedTime was called, it will return
+  // the current simulated time, otherwise the real wall-clock time.
+  base::TimeDelta Now();
+
  private:
   // Dispatch a key event to the WindowEventDispatcher.
   void DispatchKeyEvent(bool is_press, ui::KeyboardCode key_code, int flags);
@@ -346,6 +355,8 @@ class EventGenerator {
   std::list<ui::Event*> pending_events_;
   // Set to true to cause events to be posted asynchronously.
   bool async_;
+  bool use_simulated_time_;
+  base::TimeDelta simulated_time_;
 
   DISALLOW_COPY_AND_ASSIGN(EventGenerator);
 };