Use std::string instead of mojo::String in //net.

chrome/browser/net/utility_process_mojo_proxy_resolver_factory.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 "chrome/browser/net/utility_process_mojo_proxy_resolver_factory.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 49 matching lines @@
         base::Bind(&UtilityProcessMojoProxyResolverFactory::OnConnectionError,
                    base::Unretained(this)));
     weak_utility_process_host_ = utility_process_host->AsWeakPtr();
   } else {
     LOG(ERROR) << "Unable to connect to utility process";
   }
 }
 
 std::unique_ptr<base::ScopedClosureRunner>
 UtilityProcessMojoProxyResolverFactory::CreateResolver(
-    const mojo::String& pac_script,
+    const std::string& pac_script,
     mojo::InterfaceRequest<net::interfaces::ProxyResolver> req,
     net::interfaces::ProxyResolverFactoryRequestClientPtr client) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!resolver_factory_)
     CreateProcessAndConnect();
 
   if (!resolver_factory_) {
     // If there's still no factory, then utility process creation failed so
     // close |req|'s message pipe, which should cause a connection error.
     req = nullptr;
@@ skipping 32 matching lines @@
   }
 }
 
 void UtilityProcessMojoProxyResolverFactory::OnIdleTimeout() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK_EQ(num_proxy_resolvers_, 0u);
   delete weak_utility_process_host_.get();
   weak_utility_process_host_.reset();
   resolver_factory_.reset();
 }