[Win] App launcher drag/drop.

ui/app_list/views/app_list_main_view.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/app_list/views/app_list_main_view.h"
 
 #include <algorithm>
 
+#include "base/callback.h"
+#include "base/files/file_path.h"
 #include "base/strings/string_util.h"
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/app_list_item_model.h"
 #include "ui/app_list/app_list_model.h"
 #include "ui/app_list/app_list_view_delegate.h"
 #include "ui/app_list/pagination_model.h"
 #include "ui/app_list/search_box_model.h"
 #include "ui/app_list/views/app_list_item_view.h"
 #include "ui/app_list/views/contents_view.h"
 #include "ui/app_list/views/search_box_view.h"
@@ skipping 162 matching lines @@
     icon_loading_wait_timer_.Stop();
     GetWidget()->Show();
   }
 }
 
 void AppListMainView::ActivateApp(AppListItemModel* item, int event_flags) {
   if (delegate_)
     delegate_->ActivateAppListItem(item, event_flags);
 }
 
+void AppListMainView::GetShortcutPathForApp(
+    const std::string& app_id,
+    const base::Callback<void(const base::FilePath&)>& callback) {
+  if (delegate_) {
+    delegate_->GetShortcutPathForApp(app_id, callback);
+    return;
+  }
+  callback.Run(base::FilePath());
+}
+
 void AppListMainView::QueryChanged(SearchBoxView* sender) {
   base::string16 query;
   TrimWhitespace(model_->search_box()->text(), TRIM_ALL, &query);
   bool should_show_search = !query.empty();
   contents_view_->ShowSearchResults(should_show_search);
 
   if (delegate_) {
     if (should_show_search)
       delegate_->StartSearch();
     else
       delegate_->StopSearch();
   }
 }
 
 void AppListMainView::OpenResult(SearchResult* result, int event_flags) {
   if (delegate_)
     delegate_->OpenSearchResult(result, event_flags);
 }
 
 void AppListMainView::InvokeResultAction(SearchResult* result,
                                          int action_index,
                                          int event_flags) {
   if (delegate_)
     delegate_->InvokeSearchResultAction(result, action_index, event_flags);
 }
 
 }  // namespace app_list