Use FilePaths in content::DropData to avoid redundant conversions.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index f61f0a172a12a9f9238eff365706ec59697b89d7..373b7c8452cfc91b9a70259c9836c7a7f0857c7f 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -608,14 +608,14 @@ WebDragData DropDataToWebDragData(const DropData& drop_data) {
     item_list.push_back(item);
   }
 
-  for (std::vector<DropData::FileInfo>::const_iterator it =
+  for (std::vector<ui::FileInfo>::const_iterator it =
            drop_data.filenames.begin();
        it != drop_data.filenames.end();
        ++it) {
     WebDragData::Item item;
     item.storageType = WebDragData::Item::StorageTypeFilename;
-    item.filenameData = it->path;
-    item.displayNameData = it->display_name;
+    item.filenameData = it->path.AsUTF16Unsafe();
+    item.displayNameData = it->display_name.AsUTF16Unsafe();
     item_list.push_back(item);
   }