Updates comment for PlatformChannelPair::PassClientHandle

mojo/system/embedder/platform_channel_pair.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_SYSTEM_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_
 #define MOJO_SYSTEM_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/process/launch.h"
@@ skipping 32 matching lines @@
 // Note: |PlatformChannelPair()|, |PassClientHandleFromParentProcess()| and
 // |PrepareToPassClientHandleToChildProcess()| have platform-specific
 // implementations.
 class MOJO_SYSTEM_IMPL_EXPORT PlatformChannelPair {
  public:
   PlatformChannelPair();
   ~PlatformChannelPair();
 
   ScopedPlatformHandle PassServerHandle();
 
-  // For in-process use (e.g., in tests).
+  // For in-process use (e.g., in tests or to pass over another channel).
   ScopedPlatformHandle PassClientHandle();
 
   // To be called in the child process, after the parent process called
   // |PrepareToPassClientHandleToChildProcess()| and launched the child (using
   // the provided data), to create a client handle connected to the server
   // handle (in the parent process).
   static ScopedPlatformHandle PassClientHandleFromParentProcess(
       const CommandLine& command_line);
 
   // Prepares to pass the client channel to a new child process, to be launched
@@ skipping 14 matching lines @@
   ScopedPlatformHandle server_handle_;
   ScopedPlatformHandle client_handle_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformChannelPair);
 };
 
 }  // namespace embedder
 }  // namespace mojo
 
 #endif  // MOJO_SYSTEM_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_