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

content/renderer/npapi/plugin_channel_host.h

 // 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.
 
 #ifndef CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_
 #define CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_
 
 #include "base/containers/hash_tables.h"
 #include "content/child/npapi/np_channel_base.h"
 #include "ipc/ipc_channel_handle.h"
 
-namespace IPC {
-class AttachmentBroker;
-}
-
 namespace content {
 class NPObjectBase;
 
 // Encapsulates an IPC channel between the renderer and one plugin process.
 // On the plugin side there's a corresponding PluginChannel.
 class PluginChannelHost : public NPChannelBase {
  public:
 #if defined(OS_MACOSX)
   // TODO(shess): Debugging for http://crbug.com/97285 .  See comment
   // in plugin_channel_host.cc.
   static bool* GetRemoveTrackingFlag();
 #endif
   static PluginChannelHost* GetPluginChannelHost(
       const IPC::ChannelHandle& channel_handle,
-      base::SingleThreadTaskRunner* ipc_task_runner,
-      IPC::AttachmentBroker* broker);
+      base::SingleThreadTaskRunner* ipc_task_runner);
 
   bool Init(base::SingleThreadTaskRunner* ipc_task_runner,
             bool create_pipe_now,
-            base::WaitableEvent* shutdown_event,
-            IPC::AttachmentBroker* broker) override;
+            base::WaitableEvent* shutdown_event) override;
 
   int GenerateRouteID() override;
 
   void AddRoute(int route_id, IPC::Listener* listener,
                 NPObjectBase* npobject);
   void RemoveRoute(int route_id);
 
   // NPChannelBase override:
   bool Send(IPC::Message* msg) override;
 
@@ skipping 25 matching lines @@
   // True if we are expecting the plugin process to go away - in which case,
   // don't treat it as a crash.
   bool expecting_shutdown_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginChannelHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_