Cleanup more test code.

chrome/test/webdriver/session.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
 #include "chrome/test/webdriver/session_manager.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
@@ skipping 15 matching lines @@
 namespace webdriver {
 
 Session::Session(const std::string& id)
     : thread_(id.c_str()),
       id_(id),
       window_num_(0),
       implicit_wait_(0),
       current_frame_xpath_("") {
 }
 
+Session::~Session() {}
+
 bool Session::Init() {
   if (!thread_.Start()) {
     LOG(ERROR) << "Cannot start session thread";
     return false;
   }
 
   bool success = false;
   RunSessionTask(NewRunnableMethod(
       this,
       &Session::InitOnSessionThread,
@@ skipping 156 matching lines @@
   automation_.reset(new Automation());
   automation_->Init(success);
 }
 
 void Session::TerminateOnSessionThread() {
   automation_->Terminate();
   automation_.reset();
 }
 
 }  // namespace webdriver