Blimp: add packet-level DEFLATE compression using zlib.

blimp/net/test_common.cc

 // 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.
 
 #include "blimp/net/test_common.h"
 
 #include <string>
 
 #include "base/sys_byteorder.h"
 #include "blimp/common/proto/blimp_message.pb.h"
@@ skipping 54 matching lines @@
   MockableProcessMessage(*message, callback);
 }
 
 std::string EncodeHeader(size_t size) {
   scoped_ptr<char[]> serialized(new char[kPacketHeaderSizeBytes]);
   uint32_t net_size = base::HostToNet32(size);
   memcpy(serialized.get(), &net_size, sizeof(net_size));
   return std::string(serialized.get(), kPacketHeaderSizeBytes);
 }
 
-bool BufferStartsWith(net::GrowableIOBuffer* buf, const std::string& str) {
-  return (static_cast<size_t>(buf->capacity()) > str.size() &&
-          str == std::string(buf->StartOfBuffer(), str.size()));
+bool BufferStartsWith(net::GrowableIOBuffer* buf,
+                      size_t buf_size,
+                      const std::string& str) {
+  return (buf_size >= str.size() &&
+          str == std::string(buf->data(), str.size()));
 }
 
 }  // namespace blimp