[Win] App launcher drag/drop.

ash/shell/app_list.cc

Index: ash/shell/app_list.cc
diff --git a/ash/shell/app_list.cc b/ash/shell/app_list.cc
index 1f6fc49b2018d2f7da496a11c03eb1a48378320b..f9ed28b50553a2b84fac9442bc6ae4e551231c3e 100644
--- a/ash/shell/app_list.cc
+++ b/ash/shell/app_list.cc
@@ -9,6 +9,8 @@
 #include "ash/shell/example_factory.h"
 #include "ash/shell/toplevel_window.h"
 #include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/files/file_path.h"
 #include "base/i18n/case_conversion.h"
 #include "base/i18n/string_search.h"
 #include "base/strings/string_util.h"
@@ -231,6 +233,11 @@ class ExampleAppListViewDelegate : public app_list::AppListViewDelegate {
     return NULL;
   }
 
+  void GetShortcutPathForApp(
+      const std::string& app_id,
+      base::Callback<void(const base::FilePath&)> callback) OVERRIDE {
+  }
+
   virtual void ActivateAppListItem(app_list::AppListItemModel* item,
                                    int event_flags) OVERRIDE {
     static_cast<WindowTypeLauncherItem*>(item)->Activate(event_flags);