Revert of Rename wm_core_export.h to wm_export.h and the wm_core target to just wm

ui/wm/core/shadow_controller.h

Index: ui/wm/core/shadow_controller.h
diff --git a/ui/wm/core/shadow_controller.h b/ui/wm/core/shadow_controller.h
index c84689453f3fc11f92d94b3cc48caf74d4ce3bb6..47aa7435dc1479ebb71dcbba9c4f08c9d3479627 100644
--- a/ui/wm/core/shadow_controller.h
+++ b/ui/wm/core/shadow_controller.h
@@ -10,8 +10,8 @@
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
+#include "ui/wm/core/wm_core_export.h"
 #include "ui/wm/public/activation_change_observer.h"
-#include "ui/wm/wm_export.h"
 
 namespace aura {
 class Window;
@@ -31,10 +31,10 @@
 // shadows as needed. ShadowController itself is light weight and per
 // ActivationClient. ShadowController delegates to its implementation class,
 // which observes all window creation.
-class WM_EXPORT ShadowController :
+class WM_CORE_EXPORT ShadowController :
     public aura::client::ActivationChangeObserver {
  public:
-  class WM_EXPORT TestApi {
+  class WM_CORE_EXPORT TestApi {
    public:
     explicit TestApi(ShadowController* controller) : controller_(controller) {}
     ~TestApi() {}