ui: Rename ui_export.h to ui_base_export.h

ui/base/dragdrop/drop_target_win.h

Index: ui/base/dragdrop/drop_target_win.h
diff --git a/ui/base/dragdrop/drop_target_win.h b/ui/base/dragdrop/drop_target_win.h
index 0f8c56d10af5a4e9632e913eb587081d9958e360..4536f1d6aa6ce5c95838ffe32f2a2b29a0843b02 100644
--- a/ui/base/dragdrop/drop_target_win.h
+++ b/ui/base/dragdrop/drop_target_win.h
@@ -8,7 +8,7 @@
 #include <objidl.h>
 
 #include "base/memory/ref_counted.h"
-#include "ui/base/ui_export.h"
+#include "ui/base/ui_base_export.h"
 
 // Windows interface.
 struct IDropTargetHelper;
@@ -24,7 +24,7 @@ namespace ui {
 // before the HWND is deleted too.
 //
 // This class is meant to be used in a STA and is not multithread-safe.
-class UI_EXPORT DropTargetWin : public IDropTarget {
+class UI_BASE_EXPORT DropTargetWin : public IDropTarget {
  public:
   // Create a new DropTarget associating it with the given HWND.
   explicit DropTargetWin(HWND hwnd);