DevTools: Set remote base for CrOS

Bug: 747349, 941561, 998345, 1010973
Change-Id: If0291306adfb499caf66832495ba49fde7423ab2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1881496Reviewed-by: Paul Irish <paulirish@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710027}

chrome/browser/devtools/devtools_window.cc

@@ -1060,13 +1060,8 @@ GURL DevToolsWindow::GetDevToolsURL(Profile* profile,
                                     bool has_other_clients) {
   std::string url;
 
-// Modules are always bundled in CrOS.
-#if defined(OS_CHROMEOS)
-  std::string remote_base = "?";
-#else
   std::string remote_base =
       "?remoteBase=" + DevToolsUI::GetRemoteBaseURL().spec();
-#endif
 
   const std::string valid_frontend =
       frontend_url.empty() ? chrome::kChromeUIDevToolsURL : frontend_url;