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

ui/wm/wm_export.h

Index: ui/wm/wm_export.h
diff --git a/ui/wm/wm_export.h b/ui/wm/wm_export.h
deleted file mode 100644
index 461d6934adbe20b88763bd13e2a4bdd5f9d3a604..0000000000000000000000000000000000000000
--- a/ui/wm/wm_export.h
+++ /dev/null
@@ -1,32 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef UI_WM_WM_EXPORT_H_
-#define UI_WM_WM_EXPORT_H_
-
-// Defines WM_EXPORT so that functionality implemented by the WM module
-// can be exported to consumers.
-
-#if defined(COMPONENT_BUILD)
-#if defined(WIN32)
-
-#if defined(WM_IMPLEMENTATION)
-#define WM_EXPORT __declspec(dllexport)
-#else
-#define WM_EXPORT __declspec(dllimport)
-#endif  // defined(WM_IMPLEMENTATION)
-
-#else  // defined(WIN32)
-#if defined(WM_IMPLEMENTATION)
-#define WM_EXPORT __attribute__((visibility("default")))
-#else
-#define WM_EXPORT
-#endif
-#endif
-
-#else  // defined(COMPONENT_BUILD)
-#define WM_EXPORT
-#endif
-
-#endif  // UI_WM_WM_EXPORT_H_