Remove remaining calls to deprecated MessageLoop methods on Mac.

content/renderer/render_thread_impl.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/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
 #include "base/lazy_instance.h"
-#include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/discardable_memory_allocator.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/shared_memory.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
-#include "base/single_thread_task_runner.h"
+#include "base/run_loop.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_tokenizer.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/simple_thread.h"
 #include "base/threading/thread_local.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 911 matching lines @@
 
   // Context providers must be released prior to destroying the GPU channel.
   shared_worker_context_provider_ = nullptr;
   shared_main_thread_contexts_ = nullptr;
 
   if (gpu_channel_.get())
     gpu_channel_->DestroyChannel();
 
   ChildThreadImpl::Shutdown();
 
-  // Shut down the message loop and the renderer scheduler before shutting down
-  // Blink. This prevents a scenario where a pending task in the message loop
-  // accesses Blink objects after Blink shuts down.
+  // Shut down the message loop (if provided when the RenderThreadImpl was
+  // constructed) and the renderer scheduler before shutting down Blink. This
+  // prevents a scenario where a pending task in the message loop accesses Blink
+  // objects after Blink shuts down.
   renderer_scheduler_->SetRAILModeObserver(nullptr);
   renderer_scheduler_->Shutdown();
   if (main_message_loop_)
-    main_message_loop_->RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
 
   if (blink_platform_impl_) {
     blink_platform_impl_->Shutdown();
     // This must be at the very end of the shutdown sequence.
     // blink::shutdown() must be called after all strong references from
     // Chromium to Blink are cleared.
     blink::shutdown();
   }
 
   // Delay shutting down DiscardableSharedMemoryManager until blink::shutdown
@@ skipping 1247 matching lines @@
       v8_memory_pressure_level == v8::MemoryPressureLevel::kCritical)
     v8_memory_pressure_level = v8::MemoryPressureLevel::kModerate;
 
   blink::mainThreadIsolate()->MemoryPressureNotification(
       v8_memory_pressure_level);
   blink::MemoryPressureNotificationToWorkerThreadIsolates(
       v8_memory_pressure_level);
 }
 
 }  // namespace content