[cc] Change cc_tests.gyp filenames to Chromium style

cc/test/test_common.h

Index: cc/test/test_common.h
diff --git a/cc/test/test_common.h b/cc/test/test_common.h
index 638cbb270ce9b24689d5095baf174ade4f4d1a13..c748744750b007ba6d015041a6bbb9f1edf686b3 100644
--- a/cc/test/test_common.h
+++ b/cc/test/test_common.h
@@ -1,3 +1,22 @@
 // Copyright 2012 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.
+
+#ifndef CCTestCommon_h
+#define CCTestCommon_h
+
+#include "CCSettings.h"
+
+namespace WebKitTests {
+
+// If you have a test that modifies or uses global settings, keep an instance
+// of this class to ensure that you start and end with a clean slate.
+class CCScopedSettings {
+public:
+    CCScopedSettings() { cc::CCSettings::reset(); }
+    ~CCScopedSettings() { cc::CCSettings::reset(); }
+};
+
+} // namespace WebKitTests
+
+#endif // CCTestCommon_h