Drag and drop between app list and launcher - First patch

ash/shell.cc

 // Copyright (c) 2012 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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/focus_manager_factory.h"
@@ skipping 632 matching lines @@
 
 void Shell::ToggleAppList(aura::Window* window) {
   // If the context window is not given, show it on the active root window.
   if (!window)
     window = GetActiveRootWindow();
   if (!app_list_controller_)
     app_list_controller_.reset(new internal::AppListController);
   app_list_controller_->SetVisible(!app_list_controller_->IsVisible(), window);
 }
 
+void Shell::SetDragAndDropHostOfCurrentAppList(
+    app_list::ApplicationDragAndDropHost* drag_and_drop_host) {
+  if (app_list_controller_.get())
+    app_list_controller_->SetDragAndDropHostOfCurrentAppList(
+        drag_and_drop_host);
+}
+
 bool Shell::GetAppListTargetVisibility() const {
   return app_list_controller_.get() &&
       app_list_controller_->GetTargetVisibility();
 }
 
 aura::Window* Shell::GetAppListWindow() {
   return app_list_controller_.get() ? app_list_controller_->GetWindow() : NULL;
 }
 
 bool Shell::IsSystemModalWindowOpen() const {
@@ skipping 292 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, aura::client::ActivationChangeObserver implementation:
 
 void Shell::OnWindowActivated(aura::Window* gained_active,
                               aura::Window* lost_active) {
   if (gained_active)
     active_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash