Added accurate TouchToMouseMode testing to SplitTap

ash/root_window_controller.cc

Index: ash/root_window_controller.cc
diff --git a/ash/root_window_controller.cc b/ash/root_window_controller.cc
index aafe0ba0c61f8dbeea3e3b61770b5191935adab0..9b53915e61cc0b82232b88d267de6dce8b0fb49c 100644
--- a/ash/root_window_controller.cc
+++ b/ash/root_window_controller.cc
@@ -281,16 +281,18 @@ class CrosAccessibilityObserver : public AccessibilityObserver {
       system_tray_notifier->RemoveAccessibilityObserver(this);
   }
 
+  ui::TouchExplorationController* GetTouchExplorationController() {
+    return touch_exploration_controller_.get();
+  }
+
  private:
   void UpdateTouchExplorationState() {
     AccessibilityDelegate* delegate =
         Shell::GetInstance()->accessibility_delegate();
     bool enabled = delegate->IsSpokenFeedbackEnabled();
-
     if (enabled && !touch_exploration_controller_.get()) {
-      touch_exploration_controller_.reset(
-          new ui::TouchExplorationController(
-              root_window_controller_->GetRootWindow()));
+      touch_exploration_controller_.reset(new ui::TouchExplorationController(
+          root_window_controller_->GetRootWindow()));
     } else if (!enabled) {
       touch_exploration_controller_.reset();
     }
@@ -379,6 +381,13 @@ const aura::Window* RootWindowController::GetRootWindow() const {
   return GetHost()->window();
 }
 
+ui::TouchExplorationController*
+RootWindowController::GetTouchExplorationController() {
+  return static_cast<CrosAccessibilityObserver*>(
+             cros_accessibility_observer_.get())
+      ->GetTouchExplorationController();
+}
+
 void RootWindowController::SetWallpaperController(
     DesktopBackgroundWidgetController* controller) {
   wallpaper_controller_.reset(controller);