content/common: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/common/host_discardable_shared_memory_manager.cc

Index: content/common/host_discardable_shared_memory_manager.cc
diff --git a/content/common/host_discardable_shared_memory_manager.cc b/content/common/host_discardable_shared_memory_manager.cc
index 6709c2527585d21057642a9191c0463c1a14c8fb..99db11720c7c9665d133291f2e691d8b848036d2 100644
--- a/content/common/host_discardable_shared_memory_manager.cc
+++ b/content/common/host_discardable_shared_memory_manager.cc
@@ -15,6 +15,7 @@
 #include "base/numerics/safe_math.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/sys_info.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 
 namespace content {
@@ -389,7 +390,7 @@ void HostDiscardableSharedMemoryManager::ScheduleEnforceMemoryPolicy() {
     return;
 
   enforce_memory_policy_pending_ = true;
-  base::MessageLoop::current()->PostDelayedTask(
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&HostDiscardableSharedMemoryManager::EnforceMemoryPolicy,
                  weak_ptr_factory_.GetWeakPtr()),