Make `content` target build without unused data members on Linux.

content/renderer/websharedworker_proxy.cc

 // Copyright (c) 2011 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 "content/renderer/websharedworker_proxy.h"
 
 #include <stddef.h>
 
 #include "content/child/webmessageportchannel_impl.h"
 #include "content/common/message_router.h"
 #include "content/common/view_messages.h"
 #include "content/common/worker_messages.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/web/WebSharedWorkerClient.h"
 
 namespace content {
 
 WebSharedWorkerProxy::WebSharedWorkerProxy(MessageRouter* router,
                                            unsigned long long document_id,
                                            int route_id,
                                            int render_frame_route_id)

[jam, 2016/01/13 16:17:50]

ditto here for the two unused params

[mlamouri (slow - plz ping), 2016/01/14 20:14:01]

Done.

     : route_id_(route_id),
-      render_frame_route_id_(render_frame_route_id),
       router_(router),
-      document_id_(document_id),
-      pending_route_id_(route_id),
       connect_listener_(NULL),
       created_(false) {
   router_->AddRoute(route_id_, this);
 }
 
 WebSharedWorkerProxy::~WebSharedWorkerProxy() {
   Disconnect();
 
   // Free up any unsent queued messages.
   for (size_t i = 0; i < queued_messages_.size(); ++i)
@@ skipping 81 matching lines @@
 }
 
 void WebSharedWorkerProxy::OnWorkerConnected() {
   if (connect_listener_) {
     // This can result in this object being freed.
     connect_listener_->connected();
   }
 }
 
 }  // namespace content