Move scoped_ole_initializer.h to ui/base/win and clean up ole initialization/uninitialization.

ui/aura/test/aura_test_helper.h

Index: ui/aura/test/aura_test_helper.h
diff --git a/ui/aura/test/aura_test_helper.h b/ui/aura/test/aura_test_helper.h
index 86ed52ead8fda012de1567f84d921c70c0e98b4a..90e3580c9042dbf585814edae374297f98393319 100644
--- a/ui/aura/test/aura_test_helper.h
+++ b/ui/aura/test/aura_test_helper.h
@@ -9,6 +9,10 @@
 #include "base/basictypes.h"
 #include "base/message_loop.h"
 
+#if defined(OS_WIN)
+#include "ui/base/win/scoped_ole_initializer.h"
+#endif
+
 namespace aura {
 class RootWindow;
 namespace test {
@@ -36,6 +40,10 @@ class AuraTestHelper {
   bool setup_called_;
   bool teardown_called_;
 
+#if defined(OS_WIN)
+  ui::ScopedOleInitializer ole_initializer_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(AuraTestHelper);
 };