Convert WindowOpenDisposition to an enum class.

services/navigation/view_impl.cc

 // Copyright 2016 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 "services/navigation/view_impl.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/interstitial_page.h"
 #include "content/public/browser/interstitial_page_delegate.h"
@@ skipping 126 matching lines @@
 void ViewImpl::AddNewContents(content::WebContents* source,
                               content::WebContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_rect,
                               bool user_gesture,
                               bool* was_blocked) {
   mojom::ViewClientPtr client;
   mojom::ViewPtr view;
   mojom::ViewRequest view_request = GetProxy(&view);
   client_->ViewCreated(std::move(view), GetProxy(&client),
-                       disposition == NEW_POPUP, initial_rect, user_gesture);
+                       disposition == WindowOpenDisposition::NEW_POPUP,
+                       initial_rect, user_gesture);
 
   const std::string new_user_id =
       content::BrowserContext::GetShellUserIdFor(
           new_contents->GetBrowserContext());
   ViewImpl* impl = new ViewImpl(
       connector_->Clone(), new_user_id, std::move(client),
       std::move(view_request), ref_->Clone());
   // TODO(beng): This is a bit crappy. should be able to create the ViewImpl
   //             with |new_contents| instead.
   impl->web_view_->SetWebContents(new_contents);
@@ skipping 131 matching lines @@
 
 views::Widget* ViewImpl::GetWidget() {
   return web_view_->GetWidget();
 }
 
 const views::Widget* ViewImpl::GetWidget() const {
   return web_view_->GetWidget();
 }
 
 }  // navigation