(NOT READY FOR REVIEW) Introduce MessagePortBypassFilter.

content/child/child_thread.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_CHILD_CHILD_THREAD_H_
 #define CONTENT_CHILD_CHILD_THREAD_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "base/power_monitor/power_monitor.h"
 #include "base/tracked_objects.h"
 #include "content/common/content_export.h"
 #include "content/common/message_router.h"
+#include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
 #include "webkit/child/resource_loader_bridge.h"
 
 namespace base {
 class MessageLoop;
 
 namespace debug {
 class TraceMemoryController;
 }  // namespace debug
 }  // namespace base
@@ skipping 14 matching lines @@
 class FileSystemDispatcher;
 class ServiceWorkerDispatcher;
 class ServiceWorkerMessageFilter;
 class QuotaDispatcher;
 class QuotaMessageFilter;
 class ResourceDispatcher;
 class SocketStreamDispatcher;
 class ThreadSafeSender;
 class WebSocketDispatcher;
 
+class MessagePortBypassFilter : public IPC::ChannelProxy::MessageFilter {
+ public:
+  MessagePortBypassFilter(base::SingleThreadTaskRunner* ipc_task_runner);
+  virtual ~MessagePortBypassFilter();
+
+  // IPC::ChannelProxy::MessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual bool GetSupportedMessageClasses(
+      std::vector<uint32>* supported_message_classes) const OVERRIDE;
+
+  void AddRoute(int32 routing_id, IPC::Listener* listener);
+  void RemoveRoute(int32 routing_id, const base::Closure& callback);
+
+ private:
+  void AddRouteOnIO(int32 routing_id, IPC::Listener* listener);
+  void RemoveRouteOnIO(int32 routing_id, const base::Closure& callback);
+
+  IDMap<IPC::Listener> routes_;
+  scoped_refptr<base::SingleThreadTaskRunner> ipc_task_runner_;
+  scoped_refptr<base::MessageLoopProxy> child_thread_loop_;
+};
+
 // The main thread of a child process derives from this class.
 class CONTENT_EXPORT ChildThread : public IPC::Listener, public IPC::Sender {
  public:
   // Creates the thread.
   ChildThread();
   // Used for single-process mode and for in process gpu mode.
   explicit ChildThread(const std::string& channel_name);
   // ChildProcess::main_thread() is reset after Shutdown(), and before the
   // destructor, so any subsystem that relies on ChildProcess::main_thread()
   // must be terminated before Shutdown returns. In particular, if a subsystem
@@ skipping 50 matching lines @@
   }
 
   QuotaDispatcher* quota_dispatcher() const {
     return quota_dispatcher_.get();
   }
 
   IPC::SyncMessageFilter* sync_message_filter() const {
     return sync_message_filter_.get();
   }
 
+  MessagePortBypassFilter* message_port_bypass_filter() const {
+    return message_port_bypass_filter_.get();
+  }
+
   // The getter should only be called on the main thread, however the
   // IPC::Sender it returns may be safely called on any thread including
   // the main thread.
   ThreadSafeSender* thread_safe_sender() const {
     return thread_safe_sender_.get();
   }
 
   ChildHistogramMessageFilter* child_histogram_message_filter() const {
     return histogram_message_filter_.get();
   }
@@ skipping 93 matching lines @@
   scoped_ptr<QuotaDispatcher> quota_dispatcher_;
 
   scoped_refptr<ChildHistogramMessageFilter> histogram_message_filter_;
 
   scoped_refptr<ChildResourceMessageFilter> resource_message_filter_;
 
   scoped_refptr<ServiceWorkerMessageFilter> service_worker_message_filter_;
 
   scoped_refptr<QuotaMessageFilter> quota_message_filter_;
 
+  scoped_refptr<MessagePortBypassFilter> message_port_bypass_filter_;
+
   scoped_ptr<ChildSharedBitmapManager> shared_bitmap_manager_;
 
   base::WeakPtrFactory<ChildThread> channel_connected_factory_;
 
   // Observes the trace event system. When tracing is enabled, optionally
   // starts profiling the tcmalloc heap.
   scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_;
 
   scoped_ptr<base::PowerMonitor> power_monitor_;
 
   bool in_browser_process_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildThread);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_CHILD_THREAD_H_