in-chrome viewer for metro

ui/surface/accelerated_surface_win.cc

Index: ui/surface/accelerated_surface_win.cc
diff --git a/ui/surface/accelerated_surface_win.cc b/ui/surface/accelerated_surface_win.cc
index 1e72d9a5a17b34f98ae8ad8e8db2ab0ab82d3550..36e04d918c3dfe3b7d0a37743f7f45eda5a836f8 100644
--- a/ui/surface/accelerated_surface_win.cc
+++ b/ui/surface/accelerated_surface_win.cc
@@ -412,6 +412,11 @@ void AcceleratedPresenterMap::RemovePresenter(
 scoped_refptr<AcceleratedPresenter> AcceleratedPresenterMap::GetPresenter(
     gfx::PluginWindowHandle window) {
   base::AutoLock locked(lock_);
+
+  if (!window) {
+    return presenters_.begin()->second;
+  }
+
   PresenterMap::iterator it = presenters_.find(window);
   if (it == presenters_.end())
     return scoped_refptr<AcceleratedPresenter>();
@@ -661,6 +666,10 @@ void AcceleratedPresenter::Invalidate() {
   window_ = NULL;
 }
 
+void AcceleratedPresenter::SetNewTargetWindow(gfx::PluginWindowHandle window) {
+  window_ = window;
+}
+
 AcceleratedPresenter::~AcceleratedPresenter() {
 }