Re-land http://codereview.chromium.org/9403039/, r124106

ppapi/tests/test_instance_deprecated.h

Index: ppapi/tests/test_instance_deprecated.h
diff --git a/ppapi/tests/test_instance_deprecated.h b/ppapi/tests/test_instance_deprecated.h
index 8b8150143e91a0798ae4c9bda571edecf0d6bb0a..9db1fb6190231c1e1222dcc82414ec4c70e15b5d 100644
--- a/ppapi/tests/test_instance_deprecated.h
+++ b/ppapi/tests/test_instance_deprecated.h
@@ -20,12 +20,19 @@ class TestInstance : public TestCase {
 
   void set_string(const std::string& s) { string_ = s; }
 
+  // Leak a reference to the given var, but ignore the leak in the leak checking
+  // that happens at shutdown. This allows us to test the "ForceFree" that
+  // happens on instance shutdown.
+  void LeakReferenceAndIgnore(const pp::Var& leaked);
+
  protected:
   // Test case protected overrides.
   virtual pp::deprecated::ScriptableObject* CreateTestObject();
 
  private:
   std::string TestExecuteScript();
+  std::string TestRecursiveObjects();
+  std::string TestLeakedObjectDestructors();
 
   // Value written by set_string which is called by the ScriptableObject. This
   // allows us to keep track of what was called.