Changes code using Compositor to pass in ContextFactory

ui/aura/window_tree_host_win.cc

Index: ui/aura/window_tree_host_win.cc
diff --git a/ui/aura/window_tree_host_win.cc b/ui/aura/window_tree_host_win.cc
index adf56e91ac76e7092f40d754d9278d016efe6a82..120167b3f6445270550b536559e66934b6f1fe29 100644
--- a/ui/aura/window_tree_host_win.cc
+++ b/ui/aura/window_tree_host_win.cc
@@ -30,8 +30,9 @@ bool use_popup_as_root_window_for_test = false;
 }  // namespace
 
 // static
-WindowTreeHost* WindowTreeHost::Create(const gfx::Rect& bounds) {
-  return new WindowTreeHostWin(bounds);
+WindowTreeHost* WindowTreeHost::Create(const gfx::Rect& bounds,
+                                       ui::ContextFactory* context_factory) {
+  return new WindowTreeHostWin(bounds, context_factory);
 }
 
 // static
@@ -40,13 +41,14 @@ gfx::Size WindowTreeHost::GetNativeScreenSize() {
                    GetSystemMetrics(SM_CYSCREEN));
 }
 
-WindowTreeHostWin::WindowTreeHostWin(const gfx::Rect& bounds)
+WindowTreeHostWin::WindowTreeHostWin(const gfx::Rect& bounds,
+                                     ui::ContextFactory* context_factory)
     : has_capture_(false) {
   if (use_popup_as_root_window_for_test)
     set_window_style(WS_POPUP);
   Init(NULL, bounds);
   SetWindowText(hwnd(), L"aura::RootWindow!");
-  CreateCompositor(GetAcceleratedWidget());
+  CreateCompositor(GetAcceleratedWidget(), context_factory);
 }
 
 WindowTreeHostWin::~WindowTreeHostWin() {