Add HTTPMultipartBuilder and its test.

util/net/http_body_test_util.h

Index: util/net/http_body_test_util.h
diff --git a/util/net/http_body_test_util.h b/util/net/http_body_test_util.h
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index 0000000000000000000000000000000000000000..288fccaeb685d615fc98d24fc1c767651f3a3ce9
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+++ b/util/net/http_body_test_util.h
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+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CRASHPAD_UTIL_NET_HTTP_BODY_TEST_UTIL_H_
+#define CRASHPAD_UTIL_NET_HTTP_BODY_TEST_UTIL_H_
+
+#include <sys/types.h>
+
+#include <string>
+
+namespace crashpad {
+
+class HTTPBodyStream;
+
+namespace test {
+
+//! \brief Reads a HTTPBodyStream to a string. If an error occurs, adds a
+//!     test failure and returns an empty string.
+//!
+//! \param[in] stream The stream from which to read.
+//!
+//! \return The contents of the stream, or an empty string on failure.
+std::string ReadStreamToString(HTTPBodyStream* stream);
+
+//! \brief Reads a HTTPBodyStream to a string. If an error occurs, adds a
+//!     test failure and returns an empty string.
+//!
+//! \param[in] stream The stream from which to read.
+//! \param[in] buffer_size The size of the buffer to use when reading from the
+//!     stream.
+//!
+//! \return The contents of the stream, or an empty string on failure.
+std::string ReadStreamToString(HTTPBodyStream* stream, size_t buffer_size);
+
+}  // namespace test
+}  // namespace crashpad
+
+#endif  // CRASHPAD_UTIL_NET_HTTP_BODY_TEST_UTIL_H_