Shuffles and renames ash/common/wm classes

ash/common/wm_lookup.cc

Index: ash/common/wm_lookup.cc
diff --git a/ash/common/wm/wm_lookup.cc b/ash/common/wm_lookup.cc
similarity index 84%
rename from ash/common/wm/wm_lookup.cc
rename to ash/common/wm_lookup.cc
index 28a7f536154e827104da1b6b523f4a27e672aa5b..26319af7da2adc7289a2ba114ee924b6ec95ce1d 100644
--- a/ash/common/wm/wm_lookup.cc
+++ b/ash/common/wm_lookup.cc
@@ -2,10 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/common/wm/wm_lookup.h"
+#include "ash/common/wm_lookup.h"
 
 namespace ash {
-namespace wm {
 
 // static
 WmLookup* WmLookup::instance_ = nullptr;
@@ -20,5 +19,4 @@ WmLookup* WmLookup::Get() {
   return instance_;
 }
 
-}  // namespace wm
 }  // namespace ash