chrome: Add support for custom crosh command.

chrome/browser/extensions/api/terminal/terminal_private_api.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 CHROME_BROWSER_EXTENSIONS_API_TERMINAL_TERMINAL_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_TERMINAL_TERMINAL_PRIVATE_API_H_
 
 #include <string>
 
 #include "extensions/browser/extension_function.h"
@@ skipping 18 matching lines @@
   using ProcessOutputCallback =
       base::Callback<void(int terminal_id,
                           const std::string& output_type,
                           const std::string& output)>;
   using OpenProcessCallback = base::Callback<void(int terminal_id)>;
 
   void OpenOnFileThread(const ProcessOutputCallback& output_callback,
                         const OpenProcessCallback& callback);
   void RespondOnUIThread(int terminal_id);
 
-  const char* command_;
+  std::string command_;
 };
 
 // Send input to the terminal process specified by the terminal ID, which is set
 // as an argument.
 class TerminalPrivateSendInputFunction : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("terminalPrivate.sendInput",
                              TERMINALPRIVATE_SENDINPUT)
 
  protected:
@@ skipping 50 matching lines @@
 
   ExtensionFunction::ResponseAction Run() override;
 
  private:
   void AckOutputOnFileThread(int terminal_id);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TERMINAL_TERMINAL_PRIVATE_API_H_