Make nesting/running states a RunLoop rather than a MessageLoop concept.

content/browser/browser_main_runner.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 "content/public/browser/browser_main_runner.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/leak_annotations.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/profiler/scoped_profile.h"
 #include "base/profiler/scoped_tracker.h"
+#include "base/run_loop.h"
 #include "base/time/time.h"
 #include "base/trace_event/heap_profiler_allocation_context_tracker.h"
 #include "base/trace_event/trace_event.h"
 #include "base/tracked_objects.h"
 #include "build/build_config.h"
 #include "components/tracing/common/trace_config_file.h"
 #include "components/tracing/common/tracing_switches.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/browser_shutdown_profile_dumper.h"
 #include "content/browser/notification_service_impl.h"
@@ skipping 173 matching lines @@
       main_loop_->ShutdownThreadsAndCleanUp();
 
       ui::ShutdownInputMethod();
   #if defined(OS_WIN)
       ole_initializer_.reset(NULL);
   #endif
   #if defined(OS_ANDROID)
       // Forcefully terminates the RunLoop inside MessagePumpForUI, ensuring
       // proper shutdown for content_browsertests. Shutdown() is not used by
       // the actual browser.
-      if (base::MessageLoop::current()->is_running())
+      if (base::RunLoop::IsRunningOnCurrentThread())
         base::MessageLoop::current()->QuitNow();
   #endif
       main_loop_.reset(NULL);
 
       notification_service_.reset(NULL);
 
       is_shutdown_ = true;
     }
   }
 
@@ skipping 19 matching lines @@
   return new BrowserMainRunnerImpl();
 }
 
 // static
 bool BrowserMainRunner::ExitedMainMessageLoop() {
   return !(g_exited_main_message_loop == nullptr) &&
          g_exited_main_message_loop.Get().IsSet();
 }
 
 }  // namespace content