Revert 235626 "Remove blacklisting of Mac OS 10.6 and 10.7."

trunk/src/content/browser/gpu/compositor_util_browsertest.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 "content/browser/gpu/compositor_util.h"
 #include "content/test/content_browser_test.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
 #elif defined(OS_WIN)
@@ skipping 11 matching lines @@
     DISABLED,
     ENABLED,
     THREADED,  // Implies FCM
     DELEGATED,  // Implies threaded
   } expected_mode = DISABLED;
 #if defined(USE_AURA)
   expected_mode = DELEGATED;
 #elif defined(OS_ANDROID)
   expected_mode = THREADED;
 #elif defined(OS_MACOSX)
-  expected_mode = THREADED;
-  // Lion has compositing blacklisted when using the Apple software renderer,
-  // so results will vary depending if this test is being run in a VM versus
-  // actual hardware.
-  // http://crbug.com/230931
-  if (base::mac::IsOSLion())
-    return;
+  if (base::mac::IsOSMountainLionOrLater())
+    expected_mode = THREADED;
 #elif defined(OS_WIN)
   if (base::win::GetVersion() >= base::win::VERSION_VISTA)
     expected_mode = THREADED;
 #endif
 
   EXPECT_EQ(expected_mode == ENABLED ||
             expected_mode == THREADED ||
             expected_mode == DELEGATED,
             IsForceCompositingModeEnabled());
   EXPECT_EQ(expected_mode == THREADED ||
             expected_mode == DELEGATED,
             IsThreadedCompositingEnabled());
   EXPECT_EQ(expected_mode == DELEGATED,
             IsDelegatedRendererEnabled());
 }
 
 }