Makes ash/wm/common a library

ash/wm/common/dock/docked_window_resizer.h

Index: ash/wm/common/dock/docked_window_resizer.h
diff --git a/ash/wm/common/dock/docked_window_resizer.h b/ash/wm/common/dock/docked_window_resizer.h
index be4bd8ed87446dbb22341cf22f1b27d7aebac6e3..dc482640e0fd7bd4df988e3adbc9a15a95c1e6c3 100644
--- a/ash/wm/common/dock/docked_window_resizer.h
+++ b/ash/wm/common/dock/docked_window_resizer.h
@@ -7,9 +7,9 @@
 
 #include <memory>
 
+#include "ash/wm/common/ash_wm_common_export.h"
 #include "ash/wm/common/dock/dock_types.h"
 #include "ash/wm/common/window_resizer.h"
-#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 
@@ -23,7 +23,7 @@ class DockedWindowLayoutManager;
 
 // DockWindowResizer is used by ToplevelWindowEventFilter to handle dragging,
 // moving or resizing of a window while it is docked to the side of a screen.
-class ASH_EXPORT DockedWindowResizer : public WindowResizer {
+class ASH_WM_COMMON_EXPORT DockedWindowResizer : public WindowResizer {
  public:
   ~DockedWindowResizer() override;