Don't populate URL data in WebDropData when dragging files.

chrome/browser/ui/views/toolbar/home_button.cc

Index: chrome/browser/ui/views/toolbar/home_button.cc
diff --git a/chrome/browser/ui/views/toolbar/home_button.cc b/chrome/browser/ui/views/toolbar/home_button.cc
index f20aada364d10ffb592cbc667c8127a6e1c0c088..0beec27beee7189f62d9a4c9bc4b97aead77eaba 100644
--- a/chrome/browser/ui/views/toolbar/home_button.cc
+++ b/chrome/browser/ui/views/toolbar/home_button.cc
@@ -165,7 +165,8 @@ int HomeButton::OnDragUpdated(const ui::DropTargetEvent& event) {
 int HomeButton::OnPerformDrop(const ui::DropTargetEvent& event) {
   GURL new_homepage_url;
   base::string16 title;
-  if (event.data().GetURLAndTitle(&new_homepage_url, &title) &&
+  if (event.data().GetURLAndTitle(
+          ui::OSExchangeData::ConvertFilenames, &new_homepage_url, &title) &&
       new_homepage_url.is_valid()) {
     PrefService* prefs = browser_->profile()->GetPrefs();
     bool old_is_ntp = prefs->GetBoolean(prefs::kHomePageIsNewTabPage);