Convert WindowOpenDisposition to an enum class.

content/browser/frame_host/render_frame_proxy_host.cc

 // Copyright 2014 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 "content/browser/frame_host/render_frame_proxy_host.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "content/browser/bad_message.h"
@@ skipping 239 matching lines @@
   GetProcess()->FilterURL(false, &validated_url);
 
   // Verify that we are in the same BrowsingInstance as the current
   // RenderFrameHost.
   RenderFrameHostImpl* current_rfh = frame_tree_node_->current_frame_host();
   if (!site_instance_->IsRelatedSiteInstance(current_rfh->GetSiteInstance()))
     return;
 
   // Since this navigation targeted a specific RenderFrameProxy, it should stay
   // in the current tab.
-  DCHECK_EQ(CURRENT_TAB, params.disposition);
+  DCHECK_EQ(WindowOpenDisposition::CURRENT_TAB, params.disposition);
 
   // TODO(alexmos, creis): Figure out whether |params.user_gesture| needs to be
   // passed in as well.
   frame_tree_node_->navigator()->RequestTransferURL(
       current_rfh, validated_url, site_instance_.get(), std::vector<GURL>(),
       params.referrer, ui::PAGE_TRANSITION_LINK, GlobalRequestID(),
       params.should_replace_current_entry, params.uses_post ? "POST" : "GET",
       params.resource_request_body);
 }
 
@@ skipping 98 matching lines @@
   target_rfh->Send(new FrameMsg_AdvanceFocus(target_rfh->GetRoutingID(), type,
                                              source_proxy_routing_id));
 }
 
 void RenderFrameProxyHost::OnFrameFocused() {
   frame_tree_node_->current_frame_host()->delegate()->SetFocusedFrame(
       frame_tree_node_, GetSiteInstance());
 }
 
 }  // namespace content