Convert WindowOpenDisposition to an enum class.

chrome/browser/ui/cocoa/bookmarks/bookmark_menu_cocoa_controller_unittest.mm

 // 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.
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/ui/browser.h"
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_menu_cocoa_controller.h"
 #include "chrome/browser/ui/cocoa/cocoa_profile_test.h"
@@ skipping 38 matching lines @@
 - (void)openURLForNode:(const BookmarkNode*)node {
   std::string url = node->url().possibly_invalid_spec();
   if (url.find("http://0.com") != std::string::npos)
     opened_[0] = YES;
   if (url.find("http://1.com") != std::string::npos)
     opened_[1] = YES;
 }
 
 - (void)openAll:(NSInteger)tag
     withDisposition:(WindowOpenDisposition)disposition {
-  if (disposition == NEW_FOREGROUND_TAB) {
+  if (disposition == WindowOpenDisposition::NEW_FOREGROUND_TAB) {
     opened_new_foreground_tab = YES;
-  } else if (disposition == NEW_WINDOW) {
+  } else if (disposition == WindowOpenDisposition::NEW_WINDOW) {
     opened_new_window = YES;
-  } else if (disposition == OFF_THE_RECORD) {
+  } else if (disposition == WindowOpenDisposition::OFF_THE_RECORD) {
     opened_off_the_record = YES;
   }
 }
 
 @end  // FakeBookmarkMenuController
 
 class BookmarkMenuCocoaControllerTest : public CocoaProfileTest {
  public:
   void SetUp() override {
     CocoaProfileTest::SetUp();
@@ skipping 27 matching lines @@
   EXPECT_NE(c->opened_new_foreground_tab, NO);
 
   EXPECT_EQ(c->opened_new_window, NO);
   [c openAllBookmarksNewWindow:item];
   EXPECT_NE(c->opened_new_window, NO);
 
   EXPECT_EQ(c->opened_off_the_record, NO);
   [c openAllBookmarksIncognitoWindow:item];
   EXPECT_NE(c->opened_off_the_record, NO);
 }