Make the v8 Isolate used in the proxy resolver explicit.

net/proxy/proxy_service_v8.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_PROXY_PROXY_SERVICE_V8_H_
 #define NET_PROXY_PROXY_SERVICE_V8_H_
 
 #include "base/basictypes.h"
 #include "net/base/net_export.h"
 
+namespace v8 {
+class Isolate;
+}  // namespace v8
+
 namespace net {
 
 class DhcpProxyScriptFetcher;
 class HostResolver;
 class NetLog;
 class NetworkDelegate;
 class ProxyConfigService;
 class ProxyScriptFetcher;
 class ProxyService;
 
@@ skipping 31 matching lines @@
 // # multi-threading model. In order for this to be safe to use, *ALL* the
 // # other V8's running in the process must use v8::Locker.
 // ##########################################################################
 NET_EXPORT ProxyService* CreateProxyServiceUsingV8ProxyResolver(
     ProxyConfigService* proxy_config_service,
     size_t num_pac_threads,
     ProxyScriptFetcher* proxy_script_fetcher,
     DhcpProxyScriptFetcher* dhcp_proxy_script_fetcher,
     HostResolver* host_resolver,
     NetLog* net_log,
-    NetworkDelegate* network_delegate);
+    NetworkDelegate* network_delegate,
+    v8::Isolate* v8_default_isolate);
 
 }  // namespace net
 
 #endif  // NET_PROXY_PROXY_SERVICE_V8_H_