[chromedriver] Add page loading strategy to capabilities

chrome/test/chromedriver/window_commands.cc

 // Copyright (c) 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 "chrome/test/chromedriver/window_commands.h"
 
 #include <stddef.h>
 
 #include <list>
 #include <string>
@@ skipping 214 matching lines @@
       return status;
     return Status(kUnexpectedAlertOpen, "{Alert text : " + alert_text + "}");
   }
 
   Status nav_status(kOk);
   for (int attempt = 0; attempt < 3; attempt++) {
     if (attempt == 2) {
       // Switch to main frame and retry command if subframe no longer exists.
       session->SwitchToTopFrame();
     }
-
     nav_status = web_view->WaitForPendingNavigations(
         session->GetCurrentFrameId(),
         Timeout(session->page_load_timeout, &timeout), true);
     if (nav_status.IsError())
       return nav_status;
 
     status = command.Run(session, web_view, params, value, &timeout);
     if (status.code() == kNoSuchExecutionContext || status.code() == kTimeout) {
       // If the command timed out, let WaitForPendingNavigations cancel
       // the navigation if there is one.
@@ skipping 817 matching lines @@
   return status;
 }
 
 Status ExecuteTakeHeapSnapshot(Session* session,
                                WebView* web_view,
                                const base::DictionaryValue& params,
                                std::unique_ptr<base::Value>* value,
                                Timeout* timeout) {
   return web_view->TakeHeapSnapshot(value);
 }