Parameterize TaskRunner used by ui::Compositor

ui/compositor/test/test_compositor_host_x11.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/compositor/test/test_compositor_host.h"
 
 #include <X11/Xlib.h>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 57 matching lines @@
       CopyFromParent,  // visual
       CWEventMask | CWOverrideRedirect, &swa);
   XMapWindow(display, window_);
 
   while (1) {
     XEvent event;
     XNextEvent(display, &event);
     if (event.type == MapNotify && event.xmap.window == window_)
       break;
   }
-  compositor_.reset(new ui::Compositor(window_, context_factory_));
+  compositor_.reset(new ui::Compositor(window_,
+                                       context_factory_,
+                                       base::MessageLoopProxy::current()));
   compositor_->SetScaleAndSize(1.0f, bounds_.size());
 }
 
 ui::Compositor* TestCompositorHostX11::GetCompositor() {
   return compositor_.get();
 }
 
 void TestCompositorHostX11::Draw() {
   if (compositor_.get())
     compositor_->Draw();
 }
 
 // static
 TestCompositorHost* TestCompositorHost::Create(
     const gfx::Rect& bounds,
     ui::ContextFactory* context_factory) {
   return new TestCompositorHostX11(bounds, context_factory);
 }
 
 }  // namespace ui