Reworks Channel pausing behavior

ipc/ipc_sync_channel.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 IPC_IPC_SYNC_CHANNEL_H_
 #define IPC_IPC_SYNC_CHANNEL_H_
 
 #include <deque>
 #include <memory>
 #include <string>
@@ skipping 171 matching lines @@
    private:
     ~SyncContext() override;
     // ChannelProxy methods that we override.
 
     // Called on the listener thread.
     void Clear() override;
 
     // Called on the IPC thread.
     bool OnMessageReceived(const Message& msg) override;
     void OnChannelError() override;
-    void OnChannelOpened(bool pause) override;
+    void OnChannelOpened() override;
     void OnChannelClosed() override;
 
     // Cancels all pending Send calls.
     void CancelPendingSends();
 
     void OnShutdownEventSignaled(base::WaitableEvent* event);
 
     typedef std::deque<PendingSyncMsg> PendingSyncMessageQueue;
     PendingSyncMessageQueue deserializers_;
     bool reject_new_deserializers_ = false;
@@ skipping 42 matching lines @@
 
   // Tracks SyncMessageFilters created before complete channel initialization.
   std::vector<scoped_refptr<SyncMessageFilter>> pre_init_sync_message_filters_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncChannel);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_SYNC_CHANNEL_H_