Use a single, generic, global zygote to temporarily resolve perf regressions.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 527 matching lines @@
 
 // static
 void RenderProcessHost::SetMaxRendererProcessCount(size_t count) {
   g_max_renderer_count_override = count;
 }
 
 #if defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
 // static
 void RenderProcessHostImpl::EarlyZygoteLaunch() {
   DCHECK(!g_render_zygote);
-  g_render_zygote = CreateZygote();
+  g_render_zygote = GetGenericZygote();
   // TODO(kerrnel): Investigate doing this without the ZygoteHostImpl as a
   // proxy. It is currently done this way due to concerns about race
   // conditions.
   ZygoteHostImpl::GetInstance()->SetRendererSandboxStatus(
       g_render_zygote->GetSandboxStatus());

[mdempsky, 2016/01/28 23:25:40]

  (*GetGenericZygote())->GetSandboxStatus()

[Greg K, 2016/01/29 00:41:03]

Done.

 }
 #endif  // defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
 
 RenderProcessHostImpl::RenderProcessHostImpl(
     BrowserContext* browser_context,
     StoragePartitionImpl* storage_partition_impl,
     bool is_for_guests_only)
     : fast_shutdown_started_(false),
       deleting_soon_(false),
 #ifndef NDEBUG
@@ skipping 2224 matching lines @@
 void RenderProcessHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
 BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
   return bluetooth_dispatcher_host_.get();
 }
 
 }  // namespace content