Add CompareSpdyHeaderBlocks() test helper method.

net/spdy/spdy_test_utils.h

 // 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.
 
 #ifndef NET_SPDY_TEST_UTILS_H_
 #define NET_SPDY_TEST_UTILS_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 18 matching lines @@
     const int expected_len);
 
 void SetFrameFlags(SpdyFrame* frame,
                    uint8 flags,
                    SpdyMajorVersion spdy_version);
 
 void SetFrameLength(SpdyFrame* frame,
                     size_t length,
                     SpdyMajorVersion spdy_version);
 
+// Returns true if |a| and |b| are the same size, and contain the same
+// entries in the same positions.
+bool CompareSpdyHeaderBlocks(const SpdyHeaderBlock& a,
+                             const SpdyHeaderBlock& b);
+
 std::string a2b_hex(const char* hex_data);
 
 // Returns a SHA1 HashValue in which each byte has the value |label|.
 HashValue GetTestHashValue(uint8_t label);
 
 // Returns SHA1 pinning header for the of the base64 encoding of
 // GetTestHashValue(|label|).
 std::string GetTestPin(uint8_t label);
 
 // Adds a pin for |host| to |state|.
 void AddPin(TransportSecurityState* state,
             const std::string& host,
             uint8_t primary_label,
             uint8_t backup_label);
 
 }  // namespace test
-
 }  // namespace net
 
 #endif  // NET_SPDY_TEST_UTILS_H_