content: implement unittests backend for Ozone GBM

content/test/content_test_suite.h

Index: content/test/content_test_suite.h
diff --git a/content/test/content_test_suite.h b/content/test/content_test_suite.h
index 6991b99cf62ef506c6f68e605e8538528ac46881..e607a81232490211bc28c93255a0b4652d1acffe 100644
--- a/content/test/content_test_suite.h
+++ b/content/test/content_test_suite.h
@@ -27,6 +27,11 @@ class ContentTestSuite : public ContentTestSuiteBase {
   base::win::ScopedCOMInitializer com_initializer_;
 #endif
 
+#if defined(USE_OZONE)
+  struct Impl;
+  scoped_ptr<Impl> ozone_impl_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(ContentTestSuite);
 };