The dev tools process does not actually need Web UI bindings.

chrome/browser/ui/webui/devtools_ui.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/ui/webui/devtools_ui.h"
 
 #include <string>
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 86 matching lines @@
 void DevToolsUI::RegisterDevToolsDataSource(Profile* profile) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   static bool registered = false;
   if (!registered) {
     ChromeURLDataManager::AddDataSource(profile, new DevToolsDataSource);
     registered = true;
   }
 }
 
 DevToolsUI::DevToolsUI(content::WebUI* web_ui) : WebUIController(web_ui) {
+  web_ui->SetBindings(0);
   ChromeURLDataManager::AddDataSource(
       Profile::FromWebUI(web_ui), new DevToolsDataSource);
 }
 
 void DevToolsUI::RenderViewCreated(
     content::RenderViewHost* render_view_host) {
   content::DevToolsClientHost::SetupDevToolsFrontendClient(render_view_host);
 }