Removes ShellPort::IsRunningInMash()

ash/wm/toplevel_window_event_handler_unittest.cc

Index: ash/wm/toplevel_window_event_handler_unittest.cc
diff --git a/ash/wm/toplevel_window_event_handler_unittest.cc b/ash/wm/toplevel_window_event_handler_unittest.cc
index cc5fcf55fc08fa1fdc611f9023a42a18e3e66656..f5b5d0e3e2586cf5fc11bdceb416beedecacf923 100644
--- a/ash/wm/toplevel_window_event_handler_unittest.cc
+++ b/ash/wm/toplevel_window_event_handler_unittest.cc
@@ -4,10 +4,10 @@
 
 #include "ash/wm/toplevel_window_event_handler.h"
 
+#include "ash/public/cpp/config.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
-#include "ash/shell_port.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/resize_shadow.h"
 #include "ash/wm/resize_shadow_controller.h"
@@ -786,7 +786,7 @@ TEST_F(ToplevelWindowEventHandlerTest, GestureDragCaptureLoss) {
 TEST_F(ToplevelWindowEventHandlerTest, DragSnappedWindowToExternalDisplay) {
   // TODO: SetLayoutForCurrentDisplays() needs to ported to mash.
   // http://crbug.com/698043.
-  if (ShellPort::Get()->IsRunningInMash())
+  if (Shell::GetAshConfig() == Config::MASH)
     return;
 
   UpdateDisplay("940x550,940x550");