Disable windows dock shortcut key for fullscreen mode.

ash/accelerators/accelerator_controller.cc

Index: ash/accelerators/accelerator_controller.cc
diff --git a/ash/accelerators/accelerator_controller.cc b/ash/accelerators/accelerator_controller.cc
index 68f2b2fe92d83ef7465af6eee91dfa651efce3a0..20cc26418712824e5554ab0be15884892db8a14c 100644
--- a/ash/accelerators/accelerator_controller.cc
+++ b/ash/accelerators/accelerator_controller.cc
@@ -524,7 +524,8 @@ bool AcceleratorController::PerformAction(int action,
     case WINDOW_SNAP_LEFT:
     case WINDOW_SNAP_RIGHT: {
       aura::Window* window = wm::GetActiveWindow();
-      if (!window)
+      // Disable window docking shortcut key due to http://crbug.com/135487.
+      if (!window || wm::IsWindowFullscreen(window))
         break;
       internal::SnapSizer sizer(window,
           gfx::Point(),