aura: Clean up compositor initialization/destruction.

ui/aura/test/test_suite.cc

Index: ui/aura/test/test_suite.cc
diff --git a/ui/aura/test/test_suite.cc b/ui/aura/test/test_suite.cc
index 5b76a17f73f0d71b9e3e157c416d014afaf241cf..abd3422ca40e3243fdce8cd828a73dd17c01ac24 100644
--- a/ui/aura/test/test_suite.cc
+++ b/ui/aura/test/test_suite.cc
@@ -9,7 +9,6 @@
 #include "build/build_config.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
-#include "ui/compositor/compositor_setup.h"
 #include "ui/gfx/gfx_paths.h"
 #include "ui/gl/gl_implementation.h"
 
@@ -28,8 +27,6 @@ void AuraTestSuite::Initialize() {
   // Force unittests to run using en-US so if we test against string
   // output, it'll pass regardless of the system language.
   ui::ResourceBundle::InitSharedInstanceWithLocale("en-US", NULL);
-
-  ui::SetupTestCompositor();
 }
 
 void AuraTestSuite::Shutdown() {