headless: Add devtools discovery page

headless/lib/browser/headless_devtools.cc

 // Copyright 2015 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 "headless/lib/browser/headless_devtools.h"
 
 #include "base/files/file_path.h"
 #include "components/devtools_http_handler/devtools_http_handler.h"
 #include "components/devtools_http_handler/devtools_http_handler_delegate.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/devtools_frontend_host.h"
 #include "content/public/browser/navigation_entry.h"
+#include "headless/grit/headless_lib_resources.h"
 #include "headless/lib/browser/headless_browser_context.h"
 #include "net/base/net_errors.h"
 #include "net/socket/tcp_server_socket.h"
 #include "ui/base/resource/resource_bundle.h"
 
 using devtools_http_handler::DevToolsHttpHandler;
 
 namespace headless {
 
 namespace {
@@ skipping 38 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HeadlessDevToolsDelegate);
 };
 
 HeadlessDevToolsDelegate::HeadlessDevToolsDelegate() {}
 
 HeadlessDevToolsDelegate::~HeadlessDevToolsDelegate() {}
 
 std::string HeadlessDevToolsDelegate::GetDiscoveryPageHTML() {
-  return std::string();
+  return ResourceBundle::GetSharedInstance().GetRawDataResource(
+      IDR_HEADLESS_LIB_DEVTOOLS_DISCOVERY_PAGE).as_string();
 }
 
 std::string HeadlessDevToolsDelegate::GetFrontendResource(
     const std::string& path) {
   return content::DevToolsFrontendHost::GetFrontendResource(path).as_string();
 }
 
 std::string HeadlessDevToolsDelegate::GetPageThumbnailData(const GURL& url) {
   return std::string();
 }
@@ skipping 11 matching lines @@
       browser_context->options().devtools_endpoint;
   scoped_ptr<DevToolsHttpHandler::ServerSocketFactory> socket_factory(
       new TCPServerSocketFactory(endpoint));
   return make_scoped_ptr(new DevToolsHttpHandler(
       std::move(socket_factory), std::string(), new HeadlessDevToolsDelegate(),
       browser_context->GetPath(), base::FilePath(), std::string(),
       browser_context->options().user_agent));
 }
 
 }  // namespace headless