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

net/http/http_auth_handler_ntlm.h

Index: net/http/http_auth_handler_ntlm.h
diff --git a/net/http/http_auth_handler_ntlm.h b/net/http/http_auth_handler_ntlm.h
index b24b7e071ddd717454f64c02993b57e9b799cecb..d52585411a5ea9261c0d25bff4a33937f27879c8 100644
--- a/net/http/http_auth_handler_ntlm.h
+++ b/net/http/http_auth_handler_ntlm.h
@@ -41,7 +41,7 @@ class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler {
     Factory();
     ~Factory() override;
 
-    int CreateAuthHandler(HttpAuthChallengeTokenizer* challenge,
+    int CreateAuthHandler(const HttpAuthChallengeTokenizer& challenge,
                           HttpAuth::Target target,
                           const GURL& origin,
                           CreateReason reason,
@@ -107,17 +107,17 @@ class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler {
   bool AllowsDefaultCredentials() override;
 
   HttpAuth::AuthorizationResult HandleAnotherChallenge(
-      HttpAuthChallengeTokenizer* challenge) override;
+      const HttpAuthChallengeTokenizer& challenge) override;
 
  protected:
   // This function acquires a credentials handle in the SSPI implementation.
   // It does nothing in the portable implementation.
   int InitializeBeforeFirstChallenge();
 
-  bool Init(HttpAuthChallengeTokenizer* tok) override;
+  int Init(const HttpAuthChallengeTokenizer& tok) override;
 
   int GenerateAuthTokenImpl(const AuthCredentials* credentials,
-                            const HttpRequestInfo* request,
+                            const HttpRequestInfo& request,
                             const CompletionCallback& callback,
                             std::string* auth_token) override;
 
@@ -133,7 +133,8 @@ class NET_EXPORT_PRIVATE HttpAuthHandlerNTLM : public HttpAuthHandler {
 
   // Parse the challenge, saving the results into this instance.
   HttpAuth::AuthorizationResult ParseChallenge(
-      HttpAuthChallengeTokenizer* tok, bool initial_challenge);
+      const HttpAuthChallengeTokenizer& tok,
+      bool initial_challenge);
 
   // Given an input token received from the server, generate the next output
   // token to be sent to the server.