Remove calls to MessageLoop::current() in chrome.

chrome/browser/extensions/extension_install_prompt.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/extensions/extension_install_prompt.h"
 
 #include <utility>
 
 #include "base/callback_helpers.h"
 #include "base/location.h"
@@ skipping 591 matching lines @@
       base::FilePath(),
       Manifest::INTERNAL,
       localized_manifest.get() ? *localized_manifest.get() : *manifest,
       flags,
       id,
       error);
 }
 
 ExtensionInstallPrompt::ExtensionInstallPrompt(content::WebContents* contents)
     : profile_(ProfileForWebContents(contents)),
-      ui_loop_(base::MessageLoop::current()),
       extension_(NULL),
       install_ui_(extensions::CreateExtensionInstallUI(
           ProfileForWebContents(contents))),
       show_params_(new ExtensionInstallPromptShowParams(contents)),
       did_call_show_dialog_(false),
       weak_factory_(this) {
 }
 
 ExtensionInstallPrompt::ExtensionInstallPrompt(Profile* profile,
                                                gfx::NativeWindow native_window)
     : profile_(profile),
-      ui_loop_(base::MessageLoop::current()),
       extension_(NULL),
       install_ui_(extensions::CreateExtensionInstallUI(profile)),
       show_params_(
           new ExtensionInstallPromptShowParams(profile, native_window)),
       did_call_show_dialog_(false),
       weak_factory_(this) {
 }
 
 ExtensionInstallPrompt::~ExtensionInstallPrompt() {
 }
@@ skipping 18 matching lines @@
              show_dialog_callback);
 }
 
 void ExtensionInstallPrompt::ShowDialog(
     const DoneCallback& done_callback,
     const Extension* extension,
     const SkBitmap* icon,
     std::unique_ptr<Prompt> prompt,
     std::unique_ptr<const PermissionSet> custom_permissions,
     const ShowDialogCallback& show_dialog_callback) {
-  DCHECK(ui_loop_ == base::MessageLoop::current());
+  DCHECK(ui_thread_checker_.CalledOnValidThread());
   DCHECK(prompt);
   extension_ = extension;
   done_callback_ = done_callback;
   if (icon && !icon->empty())
     SetIcon(icon);
   prompt_ = std::move(prompt);
   custom_permissions_ = std::move(custom_permissions);
   show_dialog_callback_ = show_dialog_callback;
 
   // We special-case themes to not show any confirm UI. Instead they are
@@ skipping 154 matching lines @@
 
   if (AutoConfirmPrompt(&done_callback_))
     return;
 
   if (show_dialog_callback_.is_null())
     show_dialog_callback_ = GetDefaultShowDialogCallback();
   base::ResetAndReturn(&show_dialog_callback_)
       .Run(show_params_.get(), base::ResetAndReturn(&done_callback_),
            std::move(prompt_));
 }