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

content/public/test/browser_test_base.cc

Index: content/public/test/browser_test_base.cc
diff --git a/content/public/test/browser_test_base.cc b/content/public/test/browser_test_base.cc
index c5078fc19b525c20c2d024dbd88b489c8003d30c..9892f2e3d68b823aa15d6177cc89c4a6f6c4392d 100644
--- a/content/public/test/browser_test_base.cc
+++ b/content/public/test/browser_test_base.cc
@@ -8,8 +8,7 @@
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/i18n/icu_util.h"
-#include "base/location.h"
-#include "base/single_thread_task_runner.h"
+#include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/sys_info.h"
 #include "base/test/test_timeouts.h"
@@ -336,7 +335,7 @@ void BrowserTestBase::PostTaskToInProcessRendererAndWait(
       RenderProcessHostImpl::GetInProcessRendererThreadForTesting();
   CHECK(renderer_loop);
 
-  renderer_loop->task_runner()->PostTask(
+  renderer_loop->PostTask(
       FROM_HERE,
       base::Bind(&RunTaskOnRendererThread, task, runner->QuitClosure()));
   runner->Run();