ChannelMojo: Handle when ChannelMojo outlives ChannelMojoHost

ipc/mojo/ipc_channel_mojo.h

Index: ipc/mojo/ipc_channel_mojo.h
diff --git a/ipc/mojo/ipc_channel_mojo.h b/ipc/mojo/ipc_channel_mojo.h
index 9964a8f80b74f5a82ff156d5e58c9d110208ef55..7aff3c99cca4a8386aa78bcc39e23845b193611d 100644
--- a/ipc/mojo/ipc_channel_mojo.h
+++ b/ipc/mojo/ipc_channel_mojo.h
@@ -62,7 +62,7 @@ class IPC_MOJO_EXPORT ChannelMojo : public Channel,
                                     public MojoBootstrap::Delegate {
  public:
   // Create ChannelMojo. A bootstrap channel is created as well.
-  // |host| must not be null.
+  // |host| must not be null for server channels.
   static scoped_ptr<ChannelMojo> Create(ChannelMojoHost* host,
                                         const ChannelHandle& channel_handle,
                                         Mode mode,
@@ -117,6 +117,8 @@ class IPC_MOJO_EXPORT ChannelMojo : public Channel,
   void OnPipeError(internal::MessagePipeReader* reader);
   void set_peer_pid(base::ProcessId pid) { peer_pid_ = pid; }
 
+  void HostWasDestroyed();

[viettrungluu, 2014/09/25 19:38:34]

I don't think this is used (or implemented).

[Hajime Morrita, 2014/09/25 22:00:03]

Oops. Removed.

+
  protected:
   ChannelMojo(ChannelMojoHost* host,
               const ChannelHandle& channel_handle,
@@ -136,7 +138,7 @@ class IPC_MOJO_EXPORT ChannelMojo : public Channel,
   void InitControlReader(mojo::embedder::ScopedPlatformHandle handle);
 
   scoped_ptr<MojoBootstrap> bootstrap_;
-  ChannelMojoHost* const host_;
+  base::WeakPtr<ChannelMojoHost> host_;
   Mode mode_;
   Listener* listener_;
   base::ProcessId peer_pid_;