[DevTools] Pass remoteBase query param to frontend.

chrome/browser/devtools/devtools_window.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/devtools/devtools_window.h"
 
 #include <algorithm>
 
 #include "base/json/json_reader.h"
 #include "base/metrics/histogram.h"
@@ skipping 741 matching lines @@
   std::string frontend_url(
       base_url.is_empty() ? chrome::kChromeUIDevToolsURL : base_url.spec());
   std::string url_string(
       frontend_url +
       ((frontend_url.find("?") == std::string::npos) ? "?" : "&"));
   if (shared_worker_frontend)
     url_string += "&isSharedWorker=true";
   if (remote_frontend.size()) {
     url_string += "&remoteFrontend=true";
     url_string += "&remoteFrontendUrl=" + net::EscapePath(remote_frontend);
+  } else {
+    url_string += "&remoteBase=" + DevToolsUI::GetRemoteBaseURL().spec();
   }
   if (can_dock)
     url_string += "&can_dock=true";
   if (settings.size())
     url_string += "&settings=" + settings;
   return GURL(url_string);
 }
 
 // static
 DevToolsWindow* DevToolsWindow::FindDevToolsWindow(
@@ skipping 431 matching lines @@
       closure.Run();
     return;
   }
   load_completed_callback_ = closure;
 }
 
 bool DevToolsWindow::ForwardKeyboardEvent(
     const content::NativeWebKeyboardEvent& event) {
   return event_forwarder_->ForwardEvent(event);
 }