Adds some code to help isolate where crash is happening

mojo/services/network/http_connection_impl.cc

 // 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 "mojo/services/network/http_connection_impl.h"
 
 #include <limits>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 18 matching lines @@
 
 namespace mojo {
 
 // SimpleDataPipeReader reads till end-of-file, stores the data in a string and
 // notifies completion.
 class HttpConnectionImpl::SimpleDataPipeReader {
  public:
   using CompletionCallback =
       base::Callback<void(SimpleDataPipeReader*, scoped_ptr<std::string>)>;
 
-  SimpleDataPipeReader() {}
+  SimpleDataPipeReader() : watcher_(11) {}
   ~SimpleDataPipeReader() {}
 
   void Start(ScopedDataPipeConsumerHandle consumer,
              const CompletionCallback& completion_callback) {
     DCHECK(consumer.is_valid() && !consumer_.is_valid());
     consumer_ = consumer.Pass();
     completion_callback_ = completion_callback;
     buffer_.reset(new std::string);
     ReadMore();
   }
@@ skipping 363 matching lines @@
     // The close operation is initiated by this object.
     NotifyOwnerCloseIfAllDone();
   } else {
     // The close operation is initiated by |web_socket_|; start closing this
     // object.
     Close();
   }
 }
 
 }  // namespace mojo