Stop using GetDefaultProfile() in Chrome OS implementation of platform_util::OpenExternal()

chrome/browser/platform_util_linux.cc

 // 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.
 
 #include "chrome/browser/platform_util.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
@@ skipping 58 matching lines @@
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       base::Bind(&ShowItemInFolderOnFileThread, full_path));
 }
 
 void OpenItem(const base::FilePath& full_path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       base::Bind(&XDGOpen, full_path.value()));
 }
 
-void OpenExternal(const GURL& url) {
+void OpenExternal(Profile* profile, const GURL& url) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   if (url.SchemeIs("mailto"))
     XDGEmail(url.spec());
   else
     XDGOpen(url.spec());
 }
 
 }  // namespace platform_util