Use SharedPersistentMemoryAllocator to share field trial state

components/nacl/browser/nacl_process_host.cc

 // 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.
 
 #include "components/nacl/browser/nacl_process_host.h"
 
 #include <string.h>
 #include <algorithm>
 #include <string>
 #include <utility>
@@ skipping 650 matching lines @@
     if (!NaClBrokerService::GetInstance()->LaunchLoader(
             weak_factory_.GetWeakPtr(), mojo_channel_token)) {
       SendErrorToRenderer("broker service did not launch process");
       return false;
     }
     return true;
   }
 #endif
   process_->Launch(
       new NaClSandboxedProcessLauncherDelegate(process_->GetHost()),
-      cmd_line.release(), nullptr, true);
+      cmd_line.release(), true);
   return true;
 }
 
 bool NaClProcessHost::OnMessageReceived(const IPC::Message& msg) {
   if (uses_nonsfi_mode_) {
     // IPC messages relating to NaCl's validation cache must not be exposed
     // in Non-SFI Mode, otherwise a Non-SFI nexe could use SetKnownToValidate
     // to create a hole in the SFI sandbox.
     // In Non-SFI mode, no message is expected.
     return false;
@@ skipping 615 matching lines @@
     NaClStartDebugExceptionHandlerThread(
         std::move(process), info, base::ThreadTaskRunnerHandle::Get(),
         base::Bind(&NaClProcessHost::OnDebugExceptionHandlerLaunchedByBroker,
                    weak_factory_.GetWeakPtr()));
     return true;
   }
 }
 #endif
 
 }  // namespace nacl