views: Start sending mouse events using the EventDispatch interface.

ui/views/widget/root_view.cc

Index: ui/views/widget/root_view.cc
diff --git a/ui/views/widget/root_view.cc b/ui/views/widget/root_view.cc
index 01d8b0209c8981735238ea1000c5e9ff8d21c94f..67c246fe75f535d0770d0a1ebdbb7b9a6ac133ec 100644
--- a/ui/views/widget/root_view.cc
+++ b/ui/views/widget/root_view.cc
@@ -408,8 +408,7 @@ bool RootView::OnMousePressed(const ui::MouseEvent& event) {
     ui::MouseEvent mouse_pressed_event(event, static_cast<View*>(this),
                                        mouse_pressed_handler_);
     drag_info_.Reset();
-    mouse_pressed_handler_->ProcessMousePressed(mouse_pressed_event,
-                                                &drag_info_);
+    mouse_pressed_handler_->ProcessMousePressed(mouse_pressed_event);
     return true;
   }
   DCHECK(!explicit_mouse_handler_);
@@ -438,7 +437,7 @@ bool RootView::OnMousePressed(const ui::MouseEvent& event) {
 
     drag_info_.Reset();
     bool handled = mouse_pressed_handler_->ProcessMousePressed(
-        mouse_pressed_event, &drag_info_);
+        mouse_pressed_event);
 
     // The view could have removed itself from the tree when handling
     // OnMousePressed().  In this case, the removal notification will have
@@ -481,8 +480,7 @@ bool RootView::OnMouseDragged(const ui::MouseEvent& event) {
 
     ui::MouseEvent mouse_event(event, static_cast<View*>(this),
                                mouse_pressed_handler_);
-    return mouse_pressed_handler_->ProcessMouseDragged(mouse_event,
-                                                       &drag_info_);
+    return mouse_pressed_handler_->ProcessMouseDragged(mouse_event);
   }
   return false;
 }
@@ -651,6 +649,10 @@ gfx::Vector2d RootView::CalculateOffsetToAncestorWithLayer(
   return offset;
 }
 
+View::DragInfo* RootView::GetDragInfo() {
+  return &drag_info_;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // RootView, private: