ABANDONED: mash: Move shell delegate interfaces to ash/common

ash/shell_delegate.h

Index: ash/shell_delegate.h
diff --git a/ash/shell_delegate.h b/ash/shell_delegate.h
index 468fa62736ab53f0f83da5cfdbaad81d107b199d..efec3ce2a9ed11912cca3837efd3af37cb47a184 100644
--- a/ash/shell_delegate.h
+++ b/ash/shell_delegate.h
@@ -9,7 +9,6 @@
 #include <string>
 
 #include "ash/ash_export.h"
-#include "ash/shell.h"
 #include "base/callback.h"
 #include "base/strings/string16.h"
 
@@ -44,6 +43,7 @@ namespace ash {
 
 class AccessibilityDelegate;
 class ContainerDelegate;
+class GPUSupport;
 class MediaDelegate;
 class NewWindowDelegate;
 class PointerWatcherDelegate;