[content shell] don't leak the devtools delegate

content/shell/shell_browser_main_parts.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 CONTENT_SHELL_SHELL_BROWSER_MAIN_PARTS_H_
 #define CONTENT_SHELL_SHELL_BROWSER_MAIN_PARTS_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/browser_main_parts.h"
@@ skipping 15 matching lines @@
   virtual ~ShellBrowserMainParts();
 
   // BrowserMainParts overrides.
   virtual void PreEarlyInitialization() OVERRIDE;
   virtual void PreMainMessageLoopStart() OVERRIDE;
   virtual void PostMainMessageLoopStart() OVERRIDE;
   virtual void PreMainMessageLoopRun() OVERRIDE;
   virtual bool MainMessageLoopRun(int* result_code) OVERRIDE;
   virtual void PostMainMessageLoopRun() OVERRIDE;
 
-  ShellDevToolsDelegate* devtools_delegate() { return devtools_delegate_; }
+  ShellDevToolsDelegate* devtools_delegate() {
+    return devtools_delegate_.get();
+  }
 
   ShellBrowserContext* browser_context() { return browser_context_.get(); }
   ShellBrowserContext* off_the_record_browser_context() {
     return off_the_record_browser_context_.get();
   }
 
  private:
   scoped_ptr<ShellBrowserContext> browser_context_;
   scoped_ptr<ShellBrowserContext> off_the_record_browser_context_;
 
   // For running content_browsertests.
   const MainFunctionParams& parameters_;
   bool run_message_loop_;
 
-  ShellDevToolsDelegate* devtools_delegate_;
+  scoped_ptr<ShellDevToolsDelegate> devtools_delegate_;
 #if defined(ENABLE_PLUGINS)
   scoped_ptr<ShellPluginServiceFilter> plugin_service_filter_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ShellBrowserMainParts);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_BROWSER_MAIN_PARTS_H_