Revert of Make RenderProcessHost/RenderThread use MojoChildConnection/MojoShellConnection

content/renderer/render_thread_impl.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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
@@ skipping 573 matching lines @@
   return lazy_tls.Pointer()->Get();
 }
 
 RenderThreadImpl::RenderThreadImpl(
     const InProcessChildThreadParams& params,
     std::unique_ptr<scheduler::RendererScheduler> scheduler,
     scoped_refptr<base::SingleThreadTaskRunner>& resource_task_queue)
     : ChildThreadImpl(Options::Builder()
                           .InBrowserProcess(params)
                           .UseMojoChannel(true)
-                          .UseMojoShellConnection(true)
                           .Build()),
       renderer_scheduler_(std::move(scheduler)),
       categorized_worker_pool_(new CategorizedWorkerPool()) {
   Init(resource_task_queue);
 }
 
 // When we run plugins in process, we actually run them on the render thread,
 // which means that we need to make the render thread pump UI events.
 RenderThreadImpl::RenderThreadImpl(
     std::unique_ptr<base::MessageLoop> main_message_loop,
     std::unique_ptr<scheduler::RendererScheduler> scheduler)
-    : ChildThreadImpl(Options::Builder().UseMojoChannel(true).
-          UseMojoShellConnection(true).Build()),
+    : ChildThreadImpl(Options::Builder().UseMojoChannel(true).Build()),
       renderer_scheduler_(std::move(scheduler)),
       main_message_loop_(std::move(main_message_loop)),
       categorized_worker_pool_(new CategorizedWorkerPool()) {
   scoped_refptr<base::SingleThreadTaskRunner> test_task_counter;
   Init(test_task_counter);
 }
 
 void RenderThreadImpl::Init(
     scoped_refptr<base::SingleThreadTaskRunner>& resource_task_queue) {
   TRACE_EVENT0("startup", "RenderThreadImpl::Init");
@@ skipping 1591 matching lines @@
       v8_memory_pressure_level == v8::MemoryPressureLevel::kCritical)
     v8_memory_pressure_level = v8::MemoryPressureLevel::kModerate;
 
   blink::mainThreadIsolate()->MemoryPressureNotification(
       v8_memory_pressure_level);
   blink::MemoryPressureNotificationToWorkerThreadIsolates(
       v8_memory_pressure_level);
 }
 
 }  // namespace content