[net/http auth] Cleanup. Method names, and constness.

net/http/http_auth_cache_unittest.cc

Index: net/http/http_auth_cache_unittest.cc
diff --git a/net/http/http_auth_cache_unittest.cc b/net/http/http_auth_cache_unittest.cc
index 65bf17dd066d6a30efb0abe32330ae9037be6d78..1b8a5c89fb802129182742a44ee1d486a6a07231 100644
--- a/net/http/http_auth_cache_unittest.cc
+++ b/net/http/http_auth_cache_unittest.cc
@@ -31,17 +31,17 @@ class MockAuthHandler : public HttpAuthHandler {
   }
 
   HttpAuth::AuthorizationResult HandleAnotherChallenge(
-      HttpAuthChallengeTokenizer* challenge) override {
+      const HttpAuthChallengeTokenizer& challenge) override {
     return HttpAuth::AUTHORIZATION_RESULT_REJECT;
   }
 
  protected:
-  bool Init(HttpAuthChallengeTokenizer* challenge) override {
-    return false;  // Unused.
+  int Init(const HttpAuthChallengeTokenizer& challenge) override {
+    return ERR_UNEXPECTED;  // Unused.
   }
 
   int GenerateAuthTokenImpl(const AuthCredentials*,
-                            const HttpRequestInfo*,
+                            const HttpRequestInfo&,
                             const CompletionCallback& callback,
                             std::string* auth_token) override {
     *auth_token = "mock-credentials";