[chromedriver] Add chrome.detach option for configuring Chrome not to quit

chrome/test/webdriver/commands/command.h

 // Copyright (c) 2011 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_TEST_WEBDRIVER_COMMANDS_COMMAND_H_
 #define CHROME_TEST_WEBDRIVER_COMMANDS_COMMAND_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 
 namespace webdriver {
 
+class Error;
 class Response;
 
 // Base class for a command mapped to a URL in the WebDriver REST API. Each
 // URL may respond to commands sent with a DELETE, GET/HEAD, or POST HTTP
 // request. For more information on the WebDriver REST API, see
 // http://code.google.com/p/selenium/wiki/JsonWireProtocol
 class Command {
  public:
   Command(const std::vector<std::string>& path_segments,
           const DictionaryValue* const parameters);
   virtual ~Command();
 
   // Indicates which HTTP methods this command URL responds to.
   virtual bool DoesDelete();
   virtual bool DoesGet();
   virtual bool DoesPost();
 
   // Initializes this command for execution. If initialization fails, will
   // return |false| and populate the |response| with the necessary information
   // to return to the client.
   virtual bool Init(Response* const response);
 
+  // Called after this command is executed. Returns NULL if no error occurs.
+  // This is only called if |Init| is successful and regardless of whether
+  // the execution results in a |Error|.
+  virtual void Finish();
+
   // Executes the corresponding variant of this command URL.
   // Always called after |Init()| and called from the Execute function.
   // Any failure is handled as a return code found in Response.
   virtual void ExecuteDelete(Response* const response) {}
   virtual void ExecuteGet(Response* const response) {}
   virtual void ExecutePost(Response* const response) {}
 
  protected:
 
   // Returns the path variable encoded at the |i|th index (0-based) in the
@@ skipping 51 matching lines @@
   // is printed for every object deallocted.  Since every incomming command to
   // chrome driver is allocated a new thread, the release pool is declared here.
   base::mac::ScopedNSAutoreleasePool autorelease_pool;
 
   DISALLOW_COPY_AND_ASSIGN(Command);
 };
 
 }  // namespace webdriver
 
 #endif  // CHROME_TEST_WEBDRIVER_COMMANDS_COMMAND_H_