[DevTools] Remove DevToolsHttpHandler::Stop.

chromecast/browser/devtools/remote_debugging_server.cc

 // 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.
 
 #include "chromecast/browser/devtools/remote_debugging_server.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 111 matching lines @@
   VLOG(1) << "OnPortChanged called: old_port=" << port_
           << ", new_port=" << new_port;
 
   if (new_port == port_) {
     VLOG(1) << "Port has not been changed. Ignore silently.";
     return;
   }
 
   if (devtools_http_handler_) {
     LOG(INFO) << "Stop old devtools: port=" << port_;
-    // Note: Stop destroys devtools_http_handler_.
-    devtools_http_handler_->Stop();
-    devtools_http_handler_ = NULL;
+    devtools_http_handler_.reset();
   }
 
   port_ = new_port;
   if (port_ > 0) {
-    devtools_http_handler_ = content::DevToolsHttpHandler::Start(
+    devtools_http_handler_.reset(content::DevToolsHttpHandler::Start(
         CreateSocketFactory(port_),
         GetFrontendUrl(),
         new CastDevToolsDelegate(),
-        base::FilePath());
+        base::FilePath()));
     LOG(INFO) << "Devtools started: port=" << port_;
   }
 }
 
 }  // namespace shell
 }  // namespace chromecast