RefCounted types should not have public destructors, chrome/ remaining parts

chrome/test/base/testing_profile.cc

Index: chrome/test/base/testing_profile.cc
diff --git a/chrome/test/base/testing_profile.cc b/chrome/test/base/testing_profile.cc
index 7d26924df929de1a9102248ef2297d5aa1eaa7cb..d08a71df2e69407c24db54e051e1245588a0e968 100644
--- a/chrome/test/base/testing_profile.cc
+++ b/chrome/test/base/testing_profile.cc
@@ -99,6 +99,9 @@ class TestExtensionURLRequestContext : public net::URLRequestContext {
     cookie_monster->SetCookieableSchemes(schemes, 1);
     set_cookie_store(cookie_monster);
   }
+
+ private:
+  virtual ~TestExtensionURLRequestContext() {}
 };
 
 class TestExtensionURLRequestContextGetter