Changes code using Compositor to pass in ContextFactory

ash/host/ash_window_tree_host_win.cc

Index: ash/host/ash_window_tree_host_win.cc
diff --git a/ash/host/ash_window_tree_host_win.cc b/ash/host/ash_window_tree_host_win.cc
index 30f98f633036de8a2acdc180dba16c652b129554..e91964518b7b016427d9e080d8fdf4ea02dde832 100644
--- a/ash/host/ash_window_tree_host_win.cc
+++ b/ash/host/ash_window_tree_host_win.cc
@@ -22,8 +22,9 @@ namespace {
 class ASH_EXPORT AshWindowTreeHostWin : public AshWindowTreeHost,
                                         public aura::WindowTreeHostWin {
  public:
-  explicit AshWindowTreeHostWin(const gfx::Rect& initial_bounds)
-      : aura::WindowTreeHostWin(initial_bounds),
+  AshWindowTreeHostWin(const gfx::Rect& initial_bounds,
+                       ui::ContextFactory* context_factory)
+      : aura::WindowTreeHostWin(initial_bounds, context_factory),
         fullscreen_(false),
         saved_window_style_(0),
         saved_window_ex_style_(0),
@@ -116,9 +117,11 @@ AshWindowTreeHost* AshWindowTreeHost::Create(
   if (base::win::GetVersion() >= base::win::VERSION_WIN7 &&
       !CommandLine::ForCurrentProcess()->HasSwitch(
           ash::switches::kForceAshToDesktop))
-    return new AshRemoteWindowTreeHostWin(init_params.remote_hwnd);
+    return new AshRemoteWindowTreeHostWin(init_params.remote_hwnd,
+                                          init_params.context_factory);
 
-  return new AshWindowTreeHostWin(init_params.initial_bounds);
+  return new AshWindowTreeHostWin(init_params.initial_bounds,
+                                  init_params.context_factory);
 }
 
 }  // namespace ash