mash: Move all ash UMA metrics to //ash/common/metrics

ash/common/wm_shell.h

Index: ash/common/wm_shell.h
diff --git a/ash/common/wm_shell.h b/ash/common/wm_shell.h
index 6add8fbb80d1588a3ff1bd6b3d0465cea72a7299..f39f7c6b4461e5d9ccce411f5e5e46287f0c9069 100644
--- a/ash/common/wm_shell.h
+++ b/ash/common/wm_shell.h
@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "ash/ash_export.h"
+#include "ash/common/metrics/user_metrics_action.h"
 
 namespace gfx {
 class Rect;
@@ -30,10 +31,7 @@ class WmSystemTrayNotifier;
 class WmWindow;
 
 namespace wm {
-
 class WindowState;
-
-enum class WmUserMetricsAction;
 }
 
 // Similar to ash::Shell. Eventually the two will be merged.
@@ -90,7 +88,7 @@ class ASH_EXPORT WmShell {
 
   virtual std::vector<WmWindow*> GetAllRootWindows() = 0;
 
-  virtual void RecordUserMetricsAction(wm::WmUserMetricsAction action) = 0;
+  virtual void RecordUserMetricsAction(UserMetricsAction action) = 0;
 
   // Returns a WindowResizer to handle dragging. |next_window_resizer| is
   // the next WindowResizer in the WindowResizer chain. This may return