chromeos: Rename native_cursor_manager_ash_classic.h/cc

To match the new class names. Doing this in two steps helps git track
the file renames more easily.

Bug: 866532
Change-Id: Iae46af10438336f2ec182c863498d0eeb1c3a29c
Reviewed-on: https://chromium-review.googlesource.com/1212100
Commit-Queue: James Cook <jamescook@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589538}

diff --git a/ash/wm/cursor_manager_test_api.cc b/ash/wm/cursor_manager_test_api.cc
index 194a1b7..019a202 100644
--- a/ash/wm/cursor_manager_test_api.cc
+++ b/ash/wm/cursor_manager_test_api.cc

@@ -6,7 +6,7 @@
 
 #include "ash/shell.h"
 #include "ash/shell_test_api.h"
-#include "ash/wm/native_cursor_manager_ash_classic.h"
+#include "ash/wm/native_cursor_manager_ash.h"
 #include "ui/base/cursor/image_cursors.h"
 #include "ui/display/display.h"
 #include "ui/wm/core/cursor_manager.h"