[mojo-edk] Bind a child token to child launches and port reservations.

mojo/edk/system/core.h

 // Copyright 2013 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_SYSTEM_CORE_H_
 #define MOJO_EDK_SYSTEM_CORE_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 35 matching lines @@
   // methods are called on this object.
   void SetIOTaskRunner(scoped_refptr<base::TaskRunner> io_task_runner);
 
   // Retrieves the NodeController for the current process.
   NodeController* GetNodeController();
 
   scoped_refptr<Dispatcher> GetDispatcher(MojoHandle handle);
 
   // Called in the parent process any time a new child is launched.
   void AddChild(base::ProcessHandle process_handle,
-                ScopedPlatformHandle platform_handle);
+                ScopedPlatformHandle platform_handle,
+                const std::string& child_token);
+
+  // Called in the parent process when a child process fails to launch.
+  void ChildLaunchFailed(const std::string& child_token);
 
   // Called in a child process exactly once during early initialization.
   void InitChild(ScopedPlatformHandle platform_handle);
 
   // Creates a message pipe endpoint connected to an endpoint in a remote
   // embedder. |platform_handle| is used as a channel to negotiate the
   // connection.
   ScopedMessagePipeHandle CreateMessagePipe(
       ScopedPlatformHandle platform_handle);
 
   // Creates a message pipe endpoint associated with |token|, which a child
   // holding the token can later locate and connect to.
-  ScopedMessagePipeHandle CreateParentMessagePipe(const std::string& token);
+  ScopedMessagePipeHandle CreateParentMessagePipe(
+      const std::string& token, const std::string& child_token);
 
   // Creates a message pipe endpoint and connects it to a pipe the parent has
   // associated with |token|.
   ScopedMessagePipeHandle CreateChildMessagePipe(const std::string& token);
 
   // Sets the mach port provider for this process.
   void SetMachPortProvider(base::PortProvider* port_provider);
 
   MojoHandle AddDispatcher(scoped_refptr<Dispatcher> dispatcher);
 
@@ skipping 212 matching lines @@
   base::Lock mapping_table_lock_;  // Protects |mapping_table_|.
   MappingTable mapping_table_;
 
   DISALLOW_COPY_AND_ASSIGN(Core);
 };
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_CORE_H_