Remove use of deprecated MessageLoop methods in components.

components/dom_distiller/core/task_tracker.cc

Index: components/dom_distiller/core/task_tracker.cc
diff --git a/components/dom_distiller/core/task_tracker.cc b/components/dom_distiller/core/task_tracker.cc
index 0a967cfbf3140c45f2ca257b95210d9b197a1727..152ba0f58dc2ab2212449c168d791037da0151bc 100644
--- a/components/dom_distiller/core/task_tracker.cc
+++ b/components/dom_distiller/core/task_tracker.cc
@@ -9,7 +9,6 @@
 
 #include "base/auto_reset.h"
 #include "base/location.h"
-#include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/dom_distiller/core/distilled_content_store.h"
@@ -154,14 +153,16 @@ void TaskTracker::OnDistillerFinished(
 
   // 'distiller_ != null' is used as a signal that distillation is in progress,
   // so it needs to be released so that we know distillation is done.
-  base::MessageLoop::current()->DeleteSoon(FROM_HERE, distiller_.release());
+  base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE,
+                                                  distiller_.release());
 
   ContentSourceFinished();
 }
 
 void TaskTracker::CancelPendingSources() {
   if (distiller_) {
-    base::MessageLoop::current()->DeleteSoon(FROM_HERE, distiller_.release());
+    base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE,
+                                                    distiller_.release());
   }
 }