[mojo-edk] Remove ChildProcessLaunched that returns a pipe handle.

mojo/edk/embedder/embedder.h

 // Copyright 2014 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 MOJO_EDK_EMBEDDER_EMBEDDER_H_
 #define MOJO_EDK_EMBEDDER_EMBEDDER_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 20 matching lines @@
 
 // Basic configuration/initialization ------------------------------------------
 
 // |Init()| sets up the basic Mojo system environment, making the |Mojo...()|
 // functions available and functional. This is never shut down (except in tests
 // -- see test_embedder.h).
 
 // Allows changing the default max message size. Must be called before Init.
 MOJO_SYSTEM_IMPL_EXPORT void SetMaxMessageSize(size_t bytes);
 
-// Called in the parent process for each child process that is launched. The
-// returned handle must be sent to the child process which then calls
-// SetParentPipeHandle.
-MOJO_SYSTEM_IMPL_EXPORT ScopedPlatformHandle ChildProcessLaunched(
-    base::ProcessHandle child_process);
-// Like above, except used when the embedder establishes the pipe between the
-// parent and child processes itself.
+// Called in the parent process for each child process that is launched.
 MOJO_SYSTEM_IMPL_EXPORT void ChildProcessLaunched(
     base::ProcessHandle child_process, ScopedPlatformHandle server_pipe);
 
 // Should be called as early as possible in the child process with the handle
 // that the parent received from ChildProcessLaunched.
 MOJO_SYSTEM_IMPL_EXPORT void SetParentPipeHandle(ScopedPlatformHandle pipe);
 
 // Same as above but extracts the pipe handle from the command line. See
 // PlatformChannelPair for details.
 MOJO_SYSTEM_IMPL_EXPORT void SetParentPipeHandleFromCommandLine();
@@ skipping 110 matching lines @@
 
 // Generates a random ASCII token string for use with CreateParentMessagePipe()
 // and CreateChildMessagePipe() above. The generated token is suitably random so
 // as to not have to worry about collisions with other generated tokens.
 MOJO_SYSTEM_IMPL_EXPORT std::string GenerateRandomToken();
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_EMBEDDER_EMBEDDER_H_