Blimp: add packet-level DEFLATE compression using zlib.

blimp/net/test_common.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 BLIMP_NET_TEST_COMMON_H_
 #define BLIMP_NET_TEST_COMMON_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 52 matching lines @@
 // GMock action that writes data from a string to an IOBuffer.
 //
 //   buf_idx (template parameter 0): 0-based index of the IOBuffer arg.
 //   str: the string containing data to be written to the IOBuffer.
 ACTION_TEMPLATE(FillBufferFromString,
                 HAS_1_TEMPLATE_PARAMS(int, buf_idx),
                 AND_1_VALUE_PARAMS(str)) {
   memcpy(testing::get<buf_idx>(args)->data(), str.data(), str.size());
 }
 
-// Returns true if |buf| has a prefix of |str|.
-// Behavior is undefined if len(buf) < len(str).
-bool BufferStartsWith(net::GrowableIOBuffer* buf, const std::string& str);
+// Returns true if |buf| is prefixed by |str|.
+bool BufferStartsWith(net::GrowableIOBuffer* buf,
+                      size_t buf_size,
+                      const std::string& str);
 
 // GMock action that writes data from a BlimpMessage to a GrowableIOBuffer.
 // Advances the buffer's |offset| to the end of the message.
 //
 //   buf_idx (template parameter 0): 0-based index of the IOBuffer arg.
 //   message: the blimp message containing data to be written to the IOBuffer
 ACTION_TEMPLATE(FillBufferFromMessage,
                 HAS_1_TEMPLATE_PARAMS(int, buf_idx),
                 AND_1_VALUE_PARAMS(message)) {
   message->SerializeToArray(testing::get<buf_idx>(args)->data(),
@@ skipping 120 matching lines @@
                       const net::CompletionCallback& callback) override;
 
   MOCK_METHOD2(MockableProcessMessage,
                void(const BlimpMessage& message,
                     const net::CompletionCallback& callback));
 };
 
 }  // namespace blimp
 
 #endif  // BLIMP_NET_TEST_COMMON_H_