Remove JS dialog dependency from content.

chrome/browser/ui/gtk/tabs/dragged_tab_controller_gtk.cc

Index: chrome/browser/ui/gtk/tabs/dragged_tab_controller_gtk.cc
diff --git a/chrome/browser/ui/gtk/tabs/dragged_tab_controller_gtk.cc b/chrome/browser/ui/gtk/tabs/dragged_tab_controller_gtk.cc
index 42ad68d85a4de79cb718715cee933530a51df791..c836bf0017409503cff069b84efd863cccc18a95 100644
--- a/chrome/browser/ui/gtk/tabs/dragged_tab_controller_gtk.cc
+++ b/chrome/browser/ui/gtk/tabs/dragged_tab_controller_gtk.cc
@@ -10,6 +10,7 @@
 #include "base/i18n/rtl.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
+#include "chrome/browser/ui/app_modal_dialogs/message_box_handler.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
@@ -180,6 +181,11 @@ void DraggedTabControllerGtk::UpdateTargetURL(TabContents* source,
   // Ignored.
 }
 
+content::JavaScriptDialogCreator*
+DraggedTabControllerGtk::GetJavaScriptDialogCreator() {
+  return GetJavaScriptDialogCreatorInstance();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // DraggedTabControllerGtk, NotificationObserver implementation: