ui/base/dragdrop: Fix warnings found by clang chromium-style plugin on Windows.

ui/base/dragdrop/os_exchange_data_provider_win.h

Index: ui/base/dragdrop/os_exchange_data_provider_win.h
diff --git a/ui/base/dragdrop/os_exchange_data_provider_win.h b/ui/base/dragdrop/os_exchange_data_provider_win.h
index 70ec9fb403518f1b4d1d8a476234ea10b477e9fe..59479ac547ad64e35426841d6b8c159a98dbd897 100644
--- a/ui/base/dragdrop/os_exchange_data_provider_win.h
+++ b/ui/base/dragdrop/os_exchange_data_provider_win.h
@@ -104,17 +104,8 @@ class DataObjectImpl : public DownloadFileObserver,
     bool owns_medium;
     scoped_refptr<DownloadFileProvider> downloader;
 
-    StoredDataInfo(const FORMATETC& format_etc, STGMEDIUM* medium)
-        : format_etc(format_etc), medium(medium), owns_medium(true) {}
-
-    ~StoredDataInfo() {
-      if (owns_medium) {
-        ReleaseStgMedium(medium);
-        delete medium;
-      }
-      if (downloader.get())
-        downloader->Stop();
-    }
+    StoredDataInfo(const FORMATETC& format_etc, STGMEDIUM* medium);
+    ~StoredDataInfo();
   };
 
   typedef ScopedVector<StoredDataInfo> StoredData;