[DevTools] Load DevTools frontend without iframe (chromium part).

content/shell/browser/shell_devtools_frontend.cc

 // Copyright 2013 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/shell/browser/shell_devtools_frontend.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 93 matching lines @@
                                         NULL,
                                         gfx::Size());
   ShellDevToolsFrontend* devtools_frontend = new ShellDevToolsFrontend(
       shell,
       inspected_contents);
 
   devtools_http_handler::DevToolsHttpHandler* http_handler =
       ShellContentBrowserClient::Get()
           ->shell_browser_main_parts()
           ->devtools_http_handler();
-  shell->LoadURL(http_handler->GetFrontendURL("/devtools/devtools.html"));
+  shell->LoadURL(http_handler->GetFrontendURL("/devtools/inspector.html"));
 
   return devtools_frontend;
 }
 
 void ShellDevToolsFrontend::Activate() {
   frontend_shell_->ActivateContents(web_contents());
 }
 
 void ShellDevToolsFrontend::Focus() {
   web_contents()->Focus();
@@ skipping 205 matching lines @@
   CallClientFunction("DevToolsAPI.embedderMessageAck",
                      &id_value, arg, nullptr);
 }
 
 void ShellDevToolsFrontend::AgentHostClosed(
     DevToolsAgentHost* agent_host, bool replaced) {
   frontend_shell_->Close();
 }
 
 }  // namespace content