Gets mustash frames looking like that of ash

mash/wm/frame/move_loop_unittest.cc

Index: mash/wm/frame/move_loop_unittest.cc
diff --git a/mash/wm/move_loop_unittest.cc b/mash/wm/frame/move_loop_unittest.cc
similarity index 97%
rename from mash/wm/move_loop_unittest.cc
rename to mash/wm/frame/move_loop_unittest.cc
index 462c7df7143165c4f3efefaac88a636a1ad6b2e1..86ca32c104c82c8a23912ac3006753df2a641565 100644
--- a/mash/wm/move_loop_unittest.cc
+++ b/mash/wm/frame/move_loop_unittest.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "mash/wm/move_loop.h"
+#include "mash/wm/frame/move_loop.h"
 
 #include "components/mus/public/cpp/tests/test_window.h"
 #include "mojo/converters/input_events/input_events_type_converters.h"
@@ -13,6 +13,9 @@
 
 using MoveLoopTest = testing::Test;
 
+namespace mash {
+namespace wm {
+
 namespace {
 
 // Sets the client area for |window|. Padding is provided on the top so that
@@ -177,3 +180,6 @@ TEST_F(MoveLoopTest, Move) {
     ASSERT_EQ(data[i].expected_bounds, window.bounds());
   }
 }
+
+}  // namespace wm
+}  // namespace mash