Purge the App Launcher code from Windows.

ui/app_list/views/apps_grid_view.h

Index: ui/app_list/views/apps_grid_view.h
diff --git a/ui/app_list/views/apps_grid_view.h b/ui/app_list/views/apps_grid_view.h
index 580290100526c5a643dbb717b536c8ab73b515c7..27c592bd9798b1004c4bca955a25f5ebd20d1689 100644
--- a/ui/app_list/views/apps_grid_view.h
+++ b/ui/app_list/views/apps_grid_view.h
@@ -30,11 +30,6 @@
 #include "ui/views/view.h"
 #include "ui/views/view_model.h"
 
-#if defined(OS_WIN)
-#include <wrl/client.h>
-#include "ui/base/dragdrop/drag_source_win.h"
-#endif
-
 namespace views {
 class ButtonListener;
 class DragImageView;
@@ -42,10 +37,6 @@ class DragImageView;
 
 namespace app_list {
 
-#if defined(OS_WIN)
-class SynchronousDrag;
-#endif
-
 namespace test {
 class AppsGridViewTestApi;
 }
@@ -462,14 +453,6 @@ class APP_LIST_EXPORT AppsGridView : public views::View,
   // Returns true if the grid view is under an OEM folder.
   bool IsUnderOEMFolder();
 
-  void StartSettingUpSynchronousDrag();
-  bool RunSynchronousDrag();
-  void CleanUpSynchronousDrag();
-#if defined(OS_WIN)
-  void OnGotShortcutPath(Microsoft::WRL::ComPtr<SynchronousDrag> drag,
-                         const base::FilePath& path);
-#endif
-
   AppListModel* model_;  // Owned by AppListView.
   AppListItemList* item_list_;  // Not owned.
   AppsGridViewDelegate* delegate_;
@@ -510,15 +493,6 @@ class APP_LIST_EXPORT AppsGridView : public views::View,
   // Page the drag started on.
   int drag_start_page_;
 
-#if defined(OS_WIN)
-  // Created when a drag is started (ie: drag exceeds the drag threshold), but
-  // not Run() until supplied with a shortcut path.
-  Microsoft::WRL::ComPtr<SynchronousDrag> synchronous_drag_;
-
-  // Whether to use SynchronousDrag to support dropping to task bar etc.
-  bool use_synchronous_drag_;
-#endif
-
   Pointer drag_pointer_;
 
   // The most recent reorder drop target.