Refactor TouchSelectionDraggableClient APIs

ui/touch_selection/longpress_drag_selector_unittest.cc

Index: ui/touch_selection/longpress_drag_selector_unittest.cc
diff --git a/ui/touch_selection/longpress_drag_selector_unittest.cc b/ui/touch_selection/longpress_drag_selector_unittest.cc
index 885943957b65b6f075e2538509ed9f52e642c3f2..fedec0880cb958e1478f7d3dfac47c9072de1c90 100644
--- a/ui/touch_selection/longpress_drag_selector_unittest.cc
+++ b/ui/touch_selection/longpress_drag_selector_unittest.cc
@@ -39,19 +39,22 @@ class LongPressDragSelectorTest : public testing::Test,
   const gfx::PointF& DragPosition() const { return drag_position_; }
 
   // LongPressDragSelectorClient implementation.
-  void OnDragBegin(const TouchSelectionDraggable& handler,
-                   const gfx::PointF& drag_position) override {
-    dragging_ = true;
-    drag_position_ = drag_position;
-  }
-
-  void OnDragUpdate(const TouchSelectionDraggable& handler,
-                    const gfx::PointF& drag_position) override {
-    drag_position_ = drag_position;
-  }
-
-  void OnDragEnd(const TouchSelectionDraggable& handler) override {
-    dragging_ = false;
+  void OnDragEvent(const TouchHandleDragEvent event,
+                   const TouchSelectionDraggable& draggable,
+                   const gfx::PointF& position) override {
+    switch (event) {
+      case HANDLE_DRAG_BEGIN:
+        dragging_ = true;
+        drag_position_ = position;
+        break;
+      case HANDLE_DRAG_UPDATE:
+        drag_position_ = position;
+        break;
+      case HANDLE_DRAG_END:
+        dragging_ = false;
+      default:
+        NOTREACHED() << "Invalid handle drag event";
+    }
   }
 
   bool IsWithinTapSlop(const gfx::Vector2dF& delta) const override {