ipc: Use a global for the process's attachment broker.

content/common/gpu/gpu_channel.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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/common/gpu/gpu_channel.h"
 
@@ skipping 445 matching lines @@
 GpuChannel::~GpuChannel() {
   // Clear stubs first because of dependencies.
   stubs_.clear();
 
   STLDeleteElements(&deferred_messages_);
   subscription_ref_set_->RemoveObserver(this);
   if (preempting_flag_.get())
     preempting_flag_->Reset();
 }
 
-IPC::ChannelHandle GpuChannel::Init(base::WaitableEvent* shutdown_event,
-                                    IPC::AttachmentBroker* attachment_broker) {
+IPC::ChannelHandle GpuChannel::Init(base::WaitableEvent* shutdown_event) {
   DCHECK(shutdown_event);
   DCHECK(!channel_);
 
   IPC::ChannelHandle channel_handle(channel_id_);
 
-  channel_ = IPC::SyncChannel::Create(channel_handle, IPC::Channel::MODE_SERVER,
-                                      this, io_task_runner_, false,
-                                      shutdown_event, attachment_broker);
+  channel_ =
+      IPC::SyncChannel::Create(channel_handle, IPC::Channel::MODE_SERVER, this,
+                               io_task_runner_, false, shutdown_event);
 
 #if defined(OS_POSIX)
   // On POSIX, pass the renderer-side FD. Also mark it as auto-close so
   // that it gets closed after it has been sent.
   base::ScopedFD renderer_fd = channel_->TakeClientFileDescriptor();
   DCHECK(renderer_fd.is_valid());
   channel_handle.socket = base::FileDescriptor(renderer_fd.Pass());
 #endif
 
   channel_->AddFilter(filter_.get());
@@ skipping 395 matching lines @@
     }
   }
 }
 
 void GpuChannel::HandleUpdateValueState(
     unsigned int target, const gpu::ValueState& state) {
   pending_valuebuffer_state_->UpdateState(target, state);
 }
 
 }  // namespace content