Implement WebUI extension via gin instead of v8::Extension

content/renderer/render_view_impl.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 "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 3276 matching lines @@
 }
 
 void RenderViewImpl::didClearWindowObject(WebFrame* frame, int world_id) {
   FOR_EACH_OBSERVER(RenderViewObserver, observers_,
                     DidClearWindowObject(frame, world_id));
 
   // Only install controllers into the main world.
   if (world_id)
     return;
 
+  if (enabled_bindings_& BINDINGS_POLICY_WEB_UI)
+    WebUIExtension::Install(frame);
+
   if (enabled_bindings_ & BINDINGS_POLICY_DOM_AUTOMATION)
     DomAutomationController::Install(this, frame);
 
   if (enabled_bindings_ & BINDINGS_POLICY_STATS_COLLECTION)
     StatsCollectionController::Install(frame);
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
   if (command_line.HasSwitch(switches::kEnableSkiaBenchmarking))
     SkiaBenchmarking::Install(frame);
@@ skipping 1019 matching lines @@
   frame->document().insertUserStyleSheet(
       WebString::fromUTF8(css),
       WebDocument::UserStyleAuthorLevel);
 }
 
 void RenderViewImpl::OnAllowBindings(int enabled_bindings_flags) {
   if ((enabled_bindings_flags & BINDINGS_POLICY_WEB_UI) &&
       !(enabled_bindings_ & BINDINGS_POLICY_WEB_UI)) {
     // WebUI uses <dialog> which is not yet enabled by default in Chrome.
     WebRuntimeFeatures::enableDialogElement(true);
-
-    RenderThread::Get()->RegisterExtension(WebUIExtension::Get());
     new WebUIExtensionData(this);
   }
 
   enabled_bindings_ |= enabled_bindings_flags;
 
   // Keep track of the total bindings accumulated in this process.
   RenderProcess::current()->AddBindings(enabled_bindings_flags);
 }
 
 void RenderViewImpl::OnDragTargetDragEnter(const DropData& drop_data,
@@ skipping 1435 matching lines @@
   for (size_t i = 0; i < icon_urls.size(); i++) {
     WebURL url = icon_urls[i].iconURL();
     if (!url.isEmpty())
       urls.push_back(FaviconURL(url,
                                 ToFaviconType(icon_urls[i].iconType())));
   }
   SendUpdateFaviconURL(urls);
 }
 
 }  // namespace content