Remove unused QuicDecrypter::Decrypt method and implementations.

net/quic/quic_connection_test.cc

 // Copyright (c) 2012 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.
 
 #include "net/quic/quic_connection.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/stl_util.h"
 #include "net/base/net_errors.h"
@@ skipping 126 matching lines @@
 // have the same value and then removes them.
 class TaggingDecrypter : public QuicDecrypter {
  public:
   ~TaggingDecrypter() override {}
 
   // QuicDecrypter interface
   bool SetKey(StringPiece key) override { return true; }
 
   bool SetNoncePrefix(StringPiece nonce_prefix) override { return true; }
 
-  bool Decrypt(StringPiece nonce,
-               StringPiece associated_data,
-               StringPiece ciphertext,
-               unsigned char* output,
-               size_t* output_length) override {
-    if (ciphertext.size() < kTagSize) {
-      return false;
-    }
-    if (!CheckTag(ciphertext, GetTag(ciphertext))) {
-      return false;
-    }
-    *output_length = ciphertext.size() - kTagSize;
-    memcpy(output, ciphertext.data(), *output_length);
-    return true;
-  }
-
   QuicData* DecryptPacket(QuicPacketSequenceNumber sequence_number,
                           StringPiece associated_data,
                           StringPiece ciphertext) override {
     if (ciphertext.size() < kTagSize) {
       return nullptr;
     }
     if (!CheckTag(ciphertext, GetTag(ciphertext))) {
       return nullptr;
     }
     const size_t len = ciphertext.size() - kTagSize;
@@ skipping 4265 matching lines @@
   // Regression test for b/18594622
   scoped_refptr<MockAckNotifierDelegate> delegate(new MockAckNotifierDelegate);
   EXPECT_DFATAL(
       connection_.SendStreamDataWithString(3, "", 0, !kFin, delegate.get()),
       "Attempt to send empty stream frame");
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net