Remove using the Shell desktop Window when we don't have an acceleated widget.

ui/surface/accelerated_surface_win.cc

Index: ui/surface/accelerated_surface_win.cc
===================================================================
--- ui/surface/accelerated_surface_win.cc	(revision 217576)
+++ ui/surface/accelerated_surface_win.cc	(working copy)
@@ -332,12 +332,6 @@
 scoped_refptr<AcceleratedPresenter> AcceleratedPresenterMap::GetPresenter(
     gfx::PluginWindowHandle window) {
   base::AutoLock locked(lock_);
-
-#if defined(USE_AURA)
-  if (!window)
-    return presenters_.begin()->second;
-#endif
-
   PresenterMap::iterator it = presenters_.find(window);
   if (it == presenters_.end())
     return scoped_refptr<AcceleratedPresenter>();
@@ -672,13 +666,6 @@
   quantized_size_ = gfx::Size();
 }
 
-#if defined(USE_AURA)
-void AcceleratedPresenter::SetNewTargetWindow(gfx::PluginWindowHandle window) {
-  window_ = window;
-  swap_chain_ = NULL;

[cpu_(ooo_6.6-7.5), 2013/08/25 23:35:17]

the new code does not null the swap chain, is that bad?

[gab, 2013/08/26 19:46:03]

no idea.... scott?

[apatrick_chromium, 2013/08/28 00:03:28]

I think it's okay.

[scottmg, 2013/09/03 16:08:56]

That was probably there to force the Present to create a new swapchain after the
window was changed (sort of behind its back). Since it's just getting the right
window via GetAcceleratedWidget now, should be OK.

-}
-#endif
-
 AcceleratedPresenter::~AcceleratedPresenter() {
 }