Coverity PASS_BY_VALUE fix.

chrome/browser/ui/extensions/shell_window.h

Index: chrome/browser/ui/extensions/shell_window.h
diff --git a/chrome/browser/ui/extensions/shell_window.h b/chrome/browser/ui/extensions/shell_window.h
index 5b051edab61a60aac5a8a029ec288ce8261ca521..b7f8f8117c0c7b38070c3c4290dcbf45ba406c83 100644
--- a/chrome/browser/ui/extensions/shell_window.h
+++ b/chrome/browser/ui/extensions/shell_window.h
@@ -55,7 +55,7 @@ class ShellWindow : public content::NotificationObserver,
   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_; }
@@ -89,7 +89,7 @@ class ShellWindow : public content::NotificationObserver,
   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;