Remove JS dialog dependency from content.

chrome/browser/ui/views/tabs/dragged_tab_controller.cc

Index: chrome/browser/ui/views/tabs/dragged_tab_controller.cc
diff --git a/chrome/browser/ui/views/tabs/dragged_tab_controller.cc b/chrome/browser/ui/views/tabs/dragged_tab_controller.cc
index 2ffa62083ef0376dbeeadde482d20e1f2fc46cc2..88c508675b899e5f6c7c62afbe530d4b76a22ae2 100644
--- a/chrome/browser/ui/views/tabs/dragged_tab_controller.cc
+++ b/chrome/browser/ui/views/tabs/dragged_tab_controller.cc
@@ -11,6 +11,7 @@
 #include "base/i18n/rtl.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.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_window.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "chrome/browser/ui/views/tabs/base_tab.h"
@@ -488,6 +489,11 @@ bool DraggedTabController::ShouldSuppressDialogs() {
   return false;
 }
 
+content::JavaScriptDialogCreator*
+DraggedTabController::GetJavaScriptDialogCreator() {
+  return GetJavaScriptDialogCreatorInstance();
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // DraggedTabController, NotificationObserver implementation: