Introduce WindowStateDelegate::ToggleFullscreen

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

Index: chrome/browser/ui/views/tabs/tab_drag_controller.cc
diff --git a/chrome/browser/ui/views/tabs/tab_drag_controller.cc b/chrome/browser/ui/views/tabs/tab_drag_controller.cc
index 8462a63e4b82b80caade1fe7fb4c5cfdb4ed2ea5..7df1ca177b1dd2878765f4ba630ef45b404e6b0a 100644
--- a/chrome/browser/ui/views/tabs/tab_drag_controller.cc
+++ b/chrome/browser/ui/views/tabs/tab_drag_controller.cc
@@ -50,8 +50,7 @@
 #include "ui/views/widget/widget.h"
 
 #if defined(USE_ASH)
-#include "ash/shell.h"
-#include "ash/shell_delegate.h"
+#include "ash/accelerators/accelerator_commands.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "ash/wm/window_state.h"
 #include "ui/aura/env.h"
@@ -1881,7 +1880,7 @@ void TabDragController::CompleteDrag() {
           host_desktop_type_ == chrome::HOST_DESKTOP_TYPE_ASH) {
         // In fullscreen mode it is only possible to get here if the source
         // was in "immersive fullscreen" mode, so toggle it back on.
-        ash::Shell::GetInstance()->delegate()->ToggleFullscreen();
+        ash::accelerators::ToggleFullscreen();
       }
 #endif
     }