Changes code using Compositor to pass in ContextFactory

ui/views/widget/desktop_aura/desktop_window_tree_host.h

Index: ui/views/widget/desktop_aura/desktop_window_tree_host.h
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host.h b/ui/views/widget/desktop_aura/desktop_window_tree_host.h
index 26925b672ff14657c27e70c651a01e2a888ff7c4..1a1ed3cb400dbdb9efec539153061b391d65ab96 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host.h
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host.h
@@ -26,6 +26,7 @@ class Rect;
 }
 
 namespace ui {
+class ContextFactory;
 class NativeTheme;
 }
 
@@ -54,7 +55,8 @@ class VIEWS_EXPORT DesktopWindowTreeHost {
 
   // Sets up resources needed before the WindowEventDispatcher has been created.
   virtual void Init(aura::Window* content_window,
-                    const Widget::InitParams& params) = 0;
+                    const Widget::InitParams& params,
+                    ui::ContextFactory* context_factory) = 0;
 
   // Invoked once the DesktopNativeWidgetAura has been created.
   virtual void OnNativeWidgetCreated(const Widget::InitParams& params) = 0;