Shell: Remove various child process type stuff.

shell/child_process.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 SHELL_CHILD_PROCESS_H_
 #define SHELL_CHILD_PROCESS_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 
 namespace base {
 class CommandLine;
 }
 
 namespace mojo {
 namespace shell {
 
 // A base class for child processes -- i.e., code that is actually run within
 // the child process. (Instances are manufactured by |Create()|.)
 class ChildProcess {
  public:
-  enum Type {
-    // Hosts a single app (see app_child_process(_host).*).
-    TYPE_APP
-  };
-
   virtual ~ChildProcess();
 
   // Returns null if the command line doesn't indicate that this is a child
   // process. |main()| should call this, and if it returns non-null it should
   // call |Main()| (without a message loop on the current thread).
   static scoped_ptr<ChildProcess> Create(const base::CommandLine& command_line);
 
   // To be implemented by subclasses. This is the "entrypoint" for a child
   // process. Run with no message loop for the main thread.
   virtual void Main() = 0;
 
  protected:
   ChildProcess();
 
   embedder::ScopedPlatformHandle* platform_channel() {
     return &platform_channel_;
   }
 
  private:
   // Available in |Main()| (after a successful |Create()|).
   embedder::ScopedPlatformHandle platform_channel_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildProcess);
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // SHELL_CHILD_PROCESS_H_