json_schema_compiler: Use std::vector<char> for binary values.

content/browser/speech/google_streaming_remote_engine_unittest.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 <queue>
 
 #include "base/big_endian.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/numerics/safe_conversions.h"
@@ skipping 315 matching lines @@
   EndMockRecognition();
 
   // Since there was no final result, we get an empty "no match" result.
   SpeechRecognitionResults empty_result;
   ExpectResultsReceived(empty_result);
   ASSERT_EQ(SPEECH_RECOGNITION_ERROR_NONE, error_);
   ASSERT_EQ(0U, results_.size());
 }
 
 TEST_F(GoogleStreamingRemoteEngineTest, SendPreamble) {
-  const int kPreambleLength = 100;
+  const size_t kPreambleLength = 100;
   scoped_refptr<SpeechRecognitionSessionPreamble> preamble =
       new SpeechRecognitionSessionPreamble();
   preamble->sample_rate = 16000;
   preamble->sample_depth = 2;
-  preamble->sample_data = std::string(kPreambleLength, 0);
+  preamble->sample_data.assign(kPreambleLength, 0);
   SpeechRecognitionEngine::Config config;
   config.auth_token = "foo";
   config.auth_scope = "bar";
   config.preamble = preamble;
   engine_under_test_->SetConfig(config);
 
   StartMockRecognition();
   ASSERT_TRUE(GetUpstreamFetcher());
   // First chunk uploaded should be the preamble.
   ASSERT_EQ(1U, UpstreamChunksUploadedFromLastCall());
@@ skipping 211 matching lines @@
 
   // Prepend 4 byte prefix length indication to the protobuf message as
   // envisaged by the google streaming recognition webservice protocol.
   uint32 prefix = HostToNet32(checked_cast<uint32>(msg_string.size()));
   msg_string.insert(0, reinterpret_cast<char*>(&prefix), sizeof(prefix));
 
   return msg_string;
 }
 
 }  // namespace content