Fix behavior of WindowEventDispatcher::SynthesizeMouseMoveEvent().

ui/aura/window_event_dispatcher.cc

Index: ui/aura/window_event_dispatcher.cc
diff --git a/ui/aura/window_event_dispatcher.cc b/ui/aura/window_event_dispatcher.cc
index c566d1b58ea3337d197801a895a99b6610f52a0e..deedeca66184a3080b6b3aa716e81dbea6b76e37 100644
--- a/ui/aura/window_event_dispatcher.cc
+++ b/ui/aura/window_event_dispatcher.cc
@@ -594,7 +594,7 @@ void WindowEventDispatcher::OnWindowBoundsChanged(Window* window,
     synthesize_mouse_move_ = false;
   }
 
-  if (window->IsVisible()) {
+  if (window->IsVisible() && !window->ignore_events()) {
     gfx::Rect old_bounds_in_root = old_bounds, new_bounds_in_root = new_bounds;
     Window::ConvertRectToTarget(window->parent(), host_->window(),
                                 &old_bounds_in_root);
@@ -698,10 +698,16 @@ ui::EventDispatchDetails WindowEventDispatcher::SynthesizeMouseMoveEvent() {
     return details;
   gfx::Point host_mouse_location = root_mouse_location;
   host_->ConvertPointToHost(&host_mouse_location);
-  ui::MouseEvent event(ui::ET_MOUSE_MOVED,
+  ui::EventType event_type = ui::ET_MOUSE_MOVED;
+  int flags = ui::EF_IS_SYNTHESIZED;
+  if (Env::GetInstance()->IsMouseButtonDown()) {
+    event_type = ui::ET_MOUSE_DRAGGED;
+    flags |= Env::GetInstance()->mouse_button_flags();
+  }
+  ui::MouseEvent event(event_type,
                        host_mouse_location,
                        host_mouse_location,
-                       ui::EF_IS_SYNTHESIZED,
+                       flags,
                        0);
   return OnEventFromSource(&event);
 }