Explicitly coerce PostDispatchAction to uint32_t in DispatchEvent()

ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc

Index: ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
diff --git a/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc b/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
index e0840cc43e84fc5bd0ac1abb2094c692dc7ed1bf..5474e5edca8cdcdc79737e6afb3e9c01d4075dcc 100644
--- a/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
+++ b/ui/views/widget/desktop_aura/x11_whole_screen_move_loop.cc
@@ -69,7 +69,7 @@ bool X11WholeScreenMoveLoop::CanDispatchEvent(const ui::PlatformEvent& event) {
 uint32_t X11WholeScreenMoveLoop::DispatchEvent(const ui::PlatformEvent& event) {
   // This method processes all events while the move loop is active.
   if (!in_move_loop_)
-    return ui::POST_DISPATCH_PERFORM_DEFAULT;
+    return ui::kPostDispatchPerformDefault;
 
   XEvent* xev = event;
   switch (xev->type) {
@@ -84,7 +84,7 @@ uint32_t X11WholeScreenMoveLoop::DispatchEvent(const ui::PlatformEvent& event) {
             base::Bind(&X11WholeScreenMoveLoop::DispatchMouseMovement,
                        weak_factory_.GetWeakPtr()));
       }
-      return ui::POST_DISPATCH_NONE;
+      return ui::kPostDispatchNone;
     }
     case ButtonRelease: {
       if (xev->xbutton.button == Button1) {
@@ -97,16 +97,16 @@ uint32_t X11WholeScreenMoveLoop::DispatchEvent(const ui::PlatformEvent& event) {
           // If the source widget had capture prior to the move loop starting,
           // it may be relying on views::Widget getting the mouse release and
           // releasing capture in Widget::OnMouseEvent().
-          return ui::POST_DISPATCH_PERFORM_DEFAULT;
+          return ui::kPostDispatchPerformDefault;
         }
       }
-      return ui::POST_DISPATCH_NONE;
+      return ui::kPostDispatchNone;
     }
     case KeyPress: {
       if (ui::KeyboardCodeFromXKeyEvent(xev) == ui::VKEY_ESCAPE) {
         canceled_ = true;
         EndMoveLoop();
-        return ui::POST_DISPATCH_NONE;
+        return ui::kPostDispatchNone;
       }
       break;
     }
@@ -141,7 +141,7 @@ uint32_t X11WholeScreenMoveLoop::DispatchEvent(const ui::PlatformEvent& event) {
     }
   }
 
-  return ui::POST_DISPATCH_PERFORM_DEFAULT;
+  return ui::kPostDispatchPerformDefault;
 }
 
 bool X11WholeScreenMoveLoop::RunMoveLoop(aura::Window* source,