Add HTTPTransport, a Mac implementation, and an end-to-end test.

util/net/http_transport.cc

+// 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.
+
+#include "util/net/http_transport.h"
+
+#include "util/net/http_body.h"
+
+namespace crashpad {
+
+HTTPTransport::HTTPTransport()
+    : url_(),
+      method_("POST"),
+      body_stream_() {

[Mark Mentovai, 2014/10/30 21:13:54]

headers_() too?

[Robert Sesek, 2014/10/31 14:48:14]

Done.

+}
+
+HTTPTransport::~HTTPTransport() {
+}
+
+void HTTPTransport::SetURL(const std::string& url) {
+  url_ = url;
+}
+
+void HTTPTransport::SetMethod(const std::string& method) {
+  method_ = method;
+}
+
+void HTTPTransport::SetHeader(const std::string& header,
+                              const std::string& value) {
+  headers_[header] = value;
+}
+
+void HTTPTransport::SetBodyStream(scoped_ptr<HTTPBodyStream> stream) {
+  body_stream_ = stream.Pass();
+}
+
+}  // namespace crashpad