Revert of Move content's shell connections to the IO thread

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 124 matching lines @@
 #include "ipc/ipc_platform_file.h"
 #include "media/base/audio_hardware_config.h"
 #include "media/base/media.h"
 #include "media/renderers/gpu_video_accelerator_factories.h"
 #include "mojo/common/common_type_converters.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "net/base/net_errors.h"
 #include "net/base/port_util.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 #include "net/base/url_util.h"
-#include "services/shell/public/cpp/interface_provider.h"
-#include "services/shell/public/cpp/interface_registry.h"
 #include "skia/ext/event_tracer_impl.h"
 #include "skia/ext/skia_memory_dump_provider.h"
 #include "third_party/WebKit/public/platform/WebImageGenerator.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebThread.h"
 #include "third_party/WebKit/public/web/WebCache.h"
 #include "third_party/WebKit/public/web/WebDatabase.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebKit.h"
@@ skipping 687 matching lines @@
   // See crbug.com/503724.
   base::DiscardableMemoryAllocator::SetInstance(
       ChildThreadImpl::discardable_shared_memory_manager());
 
   GetContentClient()->renderer()->ExposeInterfacesToBrowser(
       GetInterfaceRegistry());
 
   GetInterfaceRegistry()->AddInterface(base::Bind(CreateFrameFactory));
   GetInterfaceRegistry()->AddInterface(base::Bind(CreateEmbeddedWorkerSetup));
 
+#if defined(MOJO_SHELL_CLIENT) && defined(USE_AURA)
+  // We may not have a MojoShellConnection object in tests that directly
+  // instantiate a RenderThreadImpl.
+  if (MojoShellConnection::GetForProcess() &&
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kUseMusInRenderer))
+    CreateRenderWidgetWindowTreeClientFactory();
+#endif
+
   GetRemoteInterfaces()->GetInterface(
       mojo::GetProxy(&storage_partition_service_));
 
   is_renderer_suspended_ = false;
 }
 
 RenderThreadImpl::~RenderThreadImpl() {
 }
 
 void RenderThreadImpl::Shutdown() {
@@ skipping 116 matching lines @@
   ChildThreadImpl::ShutdownDiscardableSharedMemoryManager();
 
   // The message loop must be cleared after shutting down
   // the DiscardableSharedMemoryManager, which needs to send messages
   // to the browser process.
   main_message_loop_.reset();
 
   lazy_tls.Pointer()->Set(nullptr);
 }
 
-void RenderThreadImpl::AddConnectionFilters(MojoShellConnection* connection) {
-#if defined(MOJO_SHELL_CLIENT) && defined(USE_AURA)
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kUseMusInRenderer)) {
-    CreateRenderWidgetWindowTreeClientFactory(connection);
-  }
-#endif
-}
-
 bool RenderThreadImpl::Send(IPC::Message* msg) {
   // There are cases where we want to pump asynchronous messages while waiting
   // synchronously for the replies to the message to be sent here. However, this
   // may create an opportunity for re-entrancy into WebKit and other subsystems,
   // so we need to take care to disable callbacks, timers, and pending network
   // loads that could trigger such callbacks.
   bool pumping_events = false;
   if (msg->is_sync()) {
     if (msg->is_caller_pumping_messages()) {
       pumping_events = true;
@@ skipping 1232 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