Add PointerDetails to ui::MouseEvent's constructors

ui/events/platform/x11/x11_event_source_libevent.cc

Index: ui/events/platform/x11/x11_event_source_libevent.cc
diff --git a/ui/events/platform/x11/x11_event_source_libevent.cc b/ui/events/platform/x11/x11_event_source_libevent.cc
index 7edd46c84661c99ee44eef5d3667cdec56b8b6c6..9bdd6097ebdac4e1395968f42f1ba0940b2cf3ac 100644
--- a/ui/events/platform/x11/x11_event_source_libevent.cc
+++ b/ui/events/platform/x11/x11_event_source_libevent.cc
@@ -37,7 +37,9 @@ std::unique_ptr<ui::Event> TranslateXI2EventToEvent(const XEvent& xev) {
       return base::MakeUnique<MouseEvent>(
           event_type, EventLocationFromXEvent(xev),
           EventSystemLocationFromXEvent(xev), EventTimeFromXEvent(xev),
-          EventFlagsFromXEvent(xev), GetChangedMouseButtonFlagsFromXEvent(xev));
+          EventFlagsFromXEvent(xev), GetChangedMouseButtonFlagsFromXEvent(xev),
+          ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE,
+                             ui::PointerEvent::kMousePointerId));
     case ET_MOUSEWHEEL:
       return base::MakeUnique<MouseWheelEvent>(
           GetMouseWheelOffsetFromXEvent(xev), EventLocationFromXEvent(xev),
@@ -91,10 +93,12 @@ std::unique_ptr<ui::Event> TranslateXEventToEvent(const XEvent& xev) {
       // not real mouse move event.
       if (xev.type == EnterNotify)
         flags |= EF_IS_SYNTHESIZED;
-      return base::MakeUnique<MouseEvent>(ET_MOUSE_MOVED,
-                                          EventLocationFromXEvent(xev),
-                                          EventSystemLocationFromXEvent(xev),
-                                          EventTimeFromXEvent(xev), flags, 0);
+      return base::MakeUnique<MouseEvent>(
+          ET_MOUSE_MOVED, EventLocationFromXEvent(xev),
+          EventSystemLocationFromXEvent(xev), EventTimeFromXEvent(xev), flags,
+          0,
+          ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE,
+                             ui::PointerEvent::kMousePointerId));
 
     case KeyPress:
     case KeyRelease:
@@ -114,7 +118,9 @@ std::unique_ptr<ui::Event> TranslateXEventToEvent(const XEvent& xev) {
           return base::MakeUnique<MouseEvent>(
               EventTypeFromXEvent(xev), EventLocationFromXEvent(xev),
               EventSystemLocationFromXEvent(xev), EventTimeFromXEvent(xev),
-              flags, GetChangedMouseButtonFlagsFromXEvent(xev));
+              flags, GetChangedMouseButtonFlagsFromXEvent(xev),
+              ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE,
+                                 ui::PointerEvent::kMousePointerId));
         case ET_UNKNOWN:
           // No event is created for X11-release events for mouse-wheel
           // buttons.