Use WebKit compositor in ui::Layer

views/run_all_unittests.cc

Index: views/run_all_unittests.cc
diff --git a/views/run_all_unittests.cc b/views/run_all_unittests.cc
index 90fd4dda1307d6c72bff14705c284856a692c29c..e9749ce371debdfc240b89a6d5e0bac554e5b0e4 100644
--- a/views/run_all_unittests.cc
+++ b/views/run_all_unittests.cc
@@ -5,6 +5,7 @@
 #include "base/test/test_suite.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
+#include "ui/gfx/compositor/compositor_test_support.h"
 #include "views/view.h"
 
 class ViewTestSuite : public base::TestSuite {
@@ -22,6 +23,11 @@ class ViewTestSuite : public base::TestSuite {
     // Disable GPU browser compositor during unit tests.
     views::View::set_use_acceleration_when_possible(false);
 #endif
+    ui::CompositorTestSupport::Initialize();
+  }
+
+  virtual void Shutdown() {
+    ui::CompositorTestSupport::Terminate();
   }
 };