Coverity PASS_BY_VALUE fix.

chrome/browser/ui/extensions/shell_window.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_UI_EXTENSIONS_SHELL_WINDOW_H_
 #define CHROME_BROWSER_UI_EXTENSIONS_SHELL_WINDOW_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
@@ skipping 37 matching lines @@
     Frame frame;
     // Specify the initial bounds of the window. If empty, the window will be a
     // default size.
     gfx::Rect bounds;
     gfx::Size minimum_size;
   };
 
   static ShellWindow* Create(Profile* profile,
                              const extensions::Extension* extension,
                              const GURL& url,
-                             const CreateParams params);
+                             const CreateParams& params);
 
   const SessionID& session_id() const { return session_id_; }
   const extensions::Extension* extension() const { return extension_; }
   content::WebContents* web_contents() const { return web_contents_; }
 
  protected:
   ShellWindow(Profile* profile,
               const extensions::Extension* extension,
               const GURL& url);
   virtual ~ShellWindow();
@@ skipping 13 matching lines @@
 
  private:
   // PlatformAppBrowserTest needs access to web_contents()
   friend class PlatformAppBrowserTest;
 
   // Instantiates a platform-specific ShellWindow subclass (one implementation
   // per platform). Public users of ShellWindow should use ShellWindow::Create.
   static ShellWindow* CreateImpl(Profile* profile,
                                  const extensions::Extension* extension,
                                  const GURL& url,
-                                 CreateParams params);
+                                 const CreateParams& params);
 
   // content::WebContentsObserver implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // content::WebContentsDelegate implementation.
   virtual void CloseContents(content::WebContents* contents) OVERRIDE;
   virtual bool ShouldSuppressDialogs() OVERRIDE;
   virtual void WebIntentDispatch(
       content::WebContents* web_contents,
       content::WebIntentsDispatcher* intents_dispatcher) OVERRIDE;
@@ skipping 31 matching lines @@
   scoped_ptr<TabContents> contents_;
   // web_contents_ is owned by contents_.
   content::WebContents* web_contents_;
   content::NotificationRegistrar registrar_;
   ExtensionFunctionDispatcher extension_function_dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellWindow);
 };
 
 #endif  // CHROME_BROWSER_UI_EXTENSIONS_SHELL_WINDOW_H_