Zygote most of the uses of the utility process on Linux

content/browser/plugin_loader_posix.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/browser/plugin_loader_posix.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
@@ skipping 76 matching lines @@
   // Check if the list is empty or all plugins have already been loaded before
   // forking.
   if (MaybeRunPendingCallbacks())
     return;
 
   if (load_start_time_.is_null())
     load_start_time_ = base::TimeTicks::Now();
 
   process_host_ = new UtilityProcessHost(this, BrowserThread::IO);
   process_host_->set_no_sandbox(true);
+  process_host_->set_use_linux_zygote(false);
 #if defined(OS_MACOSX)
   process_host_->set_child_flags(ChildProcessHost::CHILD_ALLOW_HEAP_EXECUTION);
 #endif
 
   process_host_->Send(new UtilityMsg_LoadPlugins(canonical_list_));
 }
 
 void PluginLoaderPosix::OnPluginLoaded(uint32 index,
                                        const webkit::WebPluginInfo& plugin) {
   if (index != next_load_index_) {
@@ skipping 61 matching lines @@
 
 PluginLoaderPosix::PendingCallback::PendingCallback(
     scoped_refptr<base::MessageLoopProxy> loop,
     const PluginService::GetPluginsCallback& cb)
     : target_loop(loop),
       callback(cb) {
 }
 
 PluginLoaderPosix::PendingCallback::~PendingCallback() {
 }