Mojo: Start writing some unit tests for mojo::system::Channel.

mojo/system/raw_channel.cc

 // Copyright 2014 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 "mojo/system/raw_channel.h"
 
 #include <string.h>
 
 #include <algorithm>
 
@@ skipping 108 matching lines @@
   DCHECK(!message_loop_for_io_);
   message_loop_for_io_ =
       static_cast<base::MessageLoopForIO*>(base::MessageLoop::current());
 
   // No need to take the lock. No one should be using us yet.
   DCHECK(!read_buffer_);
   read_buffer_.reset(new ReadBuffer);
   DCHECK(!write_buffer_);
   write_buffer_.reset(new WriteBuffer);
 
-  if (!OnInit())
+  if (!OnInit()) {
+    delegate_ = NULL;
+    message_loop_for_io_ = NULL;
+    read_buffer_.reset();
+    write_buffer_.reset();
     return false;
+  }
 
   return ScheduleRead() == IO_PENDING;
 }
 
 void RawChannel::Shutdown() {
   DCHECK_EQ(base::MessageLoop::current(), message_loop_for_io_);
 
   base::AutoLock locker(write_lock_);
 
   LOG_IF(WARNING, !write_buffer_->message_queue_.empty())
@@ skipping 220 matching lines @@
   }
 
   write_stopped_ = true;
   STLDeleteElements(&write_buffer_->message_queue_);
   write_buffer_->offset_ = 0;
   return false;
 }
 
 }  // namespace system
 }  // namespace mojo