Add interfaces for most major Blimp net components.

blimp/net/blimp_message_multiplexer.cc

Index: blimp/net/blimp_message_multiplexer.cc
diff --git a/blimp/net/blimp_message_multiplexer.cc b/blimp/net/blimp_message_multiplexer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ea08a9b3a8f0964594edfa1e10bad93b19795628
--- /dev/null
+++ b/blimp/net/blimp_message_multiplexer.cc
@@ -0,0 +1,40 @@
+// 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/blimp_message_multiplexer.h"
+
+namespace blimp {
+
+BlimpMessageMultiplexer::BlimpMessageMultiplexer(
+    base::WeakPtr<BlimpMessageProcessor> output_processor) {
+  NOTIMPLEMENTED();
+}
+
+BlimpMessageMultiplexer::~BlimpMessageMultiplexer() {
+  NOTIMPLEMENTED();
+}
+
+scoped_ptr<BlimpMessageProcessor> BlimpMessageMultiplexer::CreateSenderForType(
+    BlimpMessage::Type) {
+  NOTIMPLEMENTED();
+  return nullptr;
+}
+
+BlimpMessageMultiplexer::MultiplexedSender::MultiplexedSender(
+    base::WeakPtr<BlimpMessageProcessor> output_processor,
+    BlimpMessage::Type type) {
+  NOTIMPLEMENTED();
+}
+
+BlimpMessageMultiplexer::MultiplexedSender::~MultiplexedSender() {
+  NOTIMPLEMENTED();
+}
+
+void BlimpMessageMultiplexer::MultiplexedSender::ProcessMessage(
+    const BlimpMessage& message,
+    const net::CompletionCallback& callback) {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace blimp