Revert "content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs"

content/browser/frame_host/render_frame_host_manager_browsertest.cc

Index: content/browser/frame_host/render_frame_host_manager_browsertest.cc
diff --git a/content/browser/frame_host/render_frame_host_manager_browsertest.cc b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
index 7cb7328c7e57c13f125c4165981dc706ce2cebb5..aec9dac07487b881587c7c7623cf0a40b5503dfd 100644
--- a/content/browser/frame_host/render_frame_host_manager_browsertest.cc
+++ b/content/browser/frame_host/render_frame_host_manager_browsertest.cc
@@ -6,12 +6,9 @@
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
-#include "base/location.h"
 #include "base/memory/ref_counted.h"
 #include "base/path_service.h"
-#include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
-#include "base/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
@@ -1763,7 +1760,7 @@ class RenderFrameHostDestructionObserver : public WebContentsObserver {
     }
 
     if (deleted_ && message_loop_runner_->loop_running()) {
-      base::ThreadTaskRunnerHandle::Get()->PostTask(
+      base::MessageLoop::current()->PostTask(
           FROM_HERE, message_loop_runner_->QuitClosure());
     }
   }