Added touch event permutations test to touch_exploration_controller.

ui/chromeos/touch_exploration_controller.h

Index: ui/chromeos/touch_exploration_controller.h
diff --git a/ui/chromeos/touch_exploration_controller.h b/ui/chromeos/touch_exploration_controller.h
index 100a47a68d138a94aa1e46b851cf0f8e4057516d..483b49e284d15df52b0a186b8da0cabd2588357e 100644
--- a/ui/chromeos/touch_exploration_controller.h
+++ b/ui/chromeos/touch_exploration_controller.h
@@ -90,6 +90,8 @@ class UI_CHROMEOS_EXPORT TouchExplorationController
   virtual ~TouchExplorationController();
 
   void CallTapTimerNowForTesting();
+  void CallTapTimerNowIfRunningForTesting();
+  void SwitchVLOG(bool turn_on);

[dmazzoni, 2014/07/02 23:05:57]

I'd call this SwitchVLOGForTesting as-is.

I think I'd prefer that you name it something that makes it more clear why you
might want to do this, something like:

void SuppressVLOGsForTesting(bool suppress);

(This reverses the way you have the logic now - i.e. "true" would mean to not
log.)

Add a very short comment saying this is for tests that would generate too many
logs otherwise.

[evy, 2014/07/02 23:16:03]

Done.

   void SetEventHandlerForTesting(ui::EventHandler* event_handler_for_testing);
   bool IsInNoFingersDownStateForTesting() const;
 
@@ -250,6 +252,9 @@ class UI_CHROMEOS_EXPORT TouchExplorationController
   // A copy of the previous event passed.
   scoped_ptr<ui::TouchEvent> prev_event_;
 
+  // This toggles whether VLOGS are turned on or not.
+  bool VLOG_on_;
+
   DISALLOW_COPY_AND_ASSIGN(TouchExplorationController);
 };