Establish MojoChildConnection from BrowserChildProcessHostImpl

content/public/common/child_process_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_PUBLIC_COMMON_CHILD_PROCESS_HOST_H_
 #define CONTENT_PUBLIC_COMMON_CHILD_PROCESS_HOST_H_
 
 #include <stdint.h>
 
 #include "base/files/scoped_file.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "ipc/attachment_broker_privileged.h"
 #include "ipc/ipc_channel_proxy.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace IPC {
 class MessageFilter;
 }
 
+namespace shell {
+class InterfaceProvider;
+}
+
 namespace content {
 
 class ChildProcessHostDelegate;
 
 // This represents a non-browser process. This can include traditional child
 // processes like plugins, or an embedder could even use this for long lived
 // processes that run independent of the browser process.
 class CONTENT_EXPORT ChildProcessHost : public IPC::Sender {
  public:
   ~ChildProcessHost() override {}
@@ skipping 42 matching lines @@
   // Send the shutdown message to the child process.
   // Does not check with the delegate's CanShutdown.
   virtual void ForceShutdown() = 0;
 
   // Creates the IPC channel.  Returns the channel id if it succeeded, an
   // empty string otherwise
   virtual std::string CreateChannel() = 0;
 
   // Creates the IPC channel on top of Mojo. Returns the Mojo channel token if
   // succeeded, or an empty string on failure.
+  //
+  // DEPRECATED: Don't use this. Instead implement GetRemoteInterfaces() in the
+  // delegate and use the CreateChannelMojo() version below.
   virtual std::string CreateChannelMojo(const std::string& child_token) = 0;
 
+  // Creates the IPC channel over a Mojo message pipe. The pipe connection is
+  // brokered through the shell like any other service connection.
+  virtual void CreateChannelMojo() = 0;
+
   // Returns true iff the IPC channel is currently being opened;
   virtual bool IsChannelOpening() = 0;
 
   // Adds an IPC message filter.  A reference will be kept to the filter.
   virtual void AddFilter(IPC::MessageFilter* filter) = 0;
 
+  // Returns the shell::InterfaceProvider the process host can use to bind
+  // interfaces exposed to it from the child.
+  virtual shell::InterfaceProvider* GetRemoteInterfaces() = 0;
+
 #if defined(OS_POSIX)
   // See IPC::Channel::TakeClientFileDescriptor.
   virtual base::ScopedFD TakeClientFileDescriptor() = 0;
 #endif
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_CHILD_PROCESS_HOST_H_