Gets mustash frames looking like that of ash

mash/wm/frame/move_loop.cc

Index: mash/wm/frame/move_loop.cc
diff --git a/mash/wm/move_loop.cc b/mash/wm/frame/move_loop.cc
similarity index 98%
rename from mash/wm/move_loop.cc
rename to mash/wm/frame/move_loop.cc
index 6c3ee7df28024e8bf5f1d8b5943fcad5f8785eeb..786ff76cf8501839046bda9bb7fddb8ceb1a8ca8 100644
--- a/mash/wm/move_loop.cc
+++ b/mash/wm/frame/move_loop.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 "base/auto_reset.h"
 #include "components/mus/public/cpp/window.h"
@@ -11,6 +11,9 @@
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/rect.h"
 
+namespace mash {
+namespace wm {
+
 namespace {
 
 gfx::Point EventLocationToPoint(const mus::mojom::Event& event) {
@@ -221,3 +224,6 @@ void MoveLoop::OnWindowVisibilityChanged(mus::Window* window) {
   DCHECK_EQ(window, target_);
   Cancel();
 }
+
+}  // namespace wm
+}  // namespace mash