Remove calls to deprecated MessageLoop methods in content.

content/renderer/renderer_main.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 <stddef.h>
 #include <utility>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/leak_annotations.h"
 #include "base/i18n/rtl.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/pending_task.h"
+#include "base/run_loop.h"
 #include "base/strings/string_util.h"
 #include "base/sys_info.h"
 #include "base/threading/platform_thread.h"
 #include "base/timer/hi_res_timer_manager.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
 #include "content/child/child_process.h"
 #include "content/common/content_constants_internal.h"
 #include "content/common/mojo/mojo_shell_connection_impl.h"
@@ skipping 160 matching lines @@
 #endif
 
     base::HighResolutionTimerManager hi_res_timer_manager;
 
     if (run_loop) {
 #if defined(OS_MACOSX)
       if (pool)
         pool->Recycle();
 #endif
       TRACE_EVENT_ASYNC_BEGIN0("toplevel", "RendererMain.START_MSG_LOOP", 0);
-      base::MessageLoop::current()->Run();
+      base::RunLoop().Run();
       TRACE_EVENT_ASYNC_END0("toplevel", "RendererMain.START_MSG_LOOP", 0);
     }
 
 #if defined(LEAK_SANITIZER)
     // Run leak detection before RenderProcessImpl goes out of scope. This helps
     // ignore shutdown-only leaks.
     __lsan_do_leak_check();
 #endif
   }
   platform.PlatformUninitialize();
   TRACE_EVENT_ASYNC_END0("startup", "RendererMain", 0);
   return 0;
 }
 
 }  // namespace content