Remove SSLPrivateKey metadata hooks.

net/ssl/threaded_ssl_private_key.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_SSL_THREADED_SSL_PRIVATE_KEY_H_
 #define NET_SSL_THREADED_SSL_PRIVATE_KEY_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 16 matching lines @@
 // task runner.
 class ThreadedSSLPrivateKey : public SSLPrivateKey {
  public:
   // Interface for consumers to implement to perform the actual signing
   // operation.
   class Delegate {
    public:
     Delegate() {}
     virtual ~Delegate() {}
 
-    // These methods behave as those of the same name on SSLPrivateKey. They
-    // must be callable on any thread.
-    virtual Type GetType() = 0;
+    // Returns the digests that are supported by the key in decreasing
+    // preference. This method must be callable on any thread.
     virtual std::vector<SSLPrivateKey::Hash> GetDigestPreferences() = 0;
-    virtual size_t GetMaxSignatureLengthInBytes() = 0;
 
     // Signs |input| as a digest of type |hash|. On success it returns OK and
     // sets |signature| to the resulting signature. Otherwise it returns a net
     // error code. It will only be called on the task runner passed to the
     // owning ThreadedSSLPrivateKey.
     virtual Error SignDigest(Hash hash,
                              const base::StringPiece& input,
                              std::vector<uint8_t>* signature) = 0;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(Delegate);
   };
 
   ThreadedSSLPrivateKey(
       std::unique_ptr<Delegate> delegate,
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
   // SSLPrivateKey implementation.
-  Type GetType() override;
   std::vector<SSLPrivateKey::Hash> GetDigestPreferences() override;
-  size_t GetMaxSignatureLengthInBytes() override;
   void SignDigest(Hash hash,
                   const base::StringPiece& input,
                   const SignCallback& callback) override;
 
  private:
   ~ThreadedSSLPrivateKey() override;
   class Core;
 
   scoped_refptr<Core> core_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   base::WeakPtrFactory<ThreadedSSLPrivateKey> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadedSSLPrivateKey);
 };
 
 }  // namespace net
 
 #endif  // NET_SSL_THREADED_SSL_PRIVATE_KEY_H_