[chrome/browser/extensions] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

chrome/browser/extensions/api/webstore_private/webstore_private_api.cc

Index: chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
diff --git a/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc b/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
index a3a58c760e47a6885f7644f2def8a4ff68f48872..c4406ee37808af38bb6b79d54f4afe8a0ef820ee 100644
--- a/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
+++ b/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
@@ -7,10 +7,10 @@
 #include "base/bind_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_vector.h"
-#include "base/message_loop/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/stringprintf.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "chrome/browser/apps/ephemeral_app_launcher.h"
@@ -621,7 +621,7 @@ ExtensionFunction::ResponseAction WebstorePrivateInstallBundleFunction::Run() {
         net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE,
         net::LOAD_DO_NOT_SAVE_COOKIES | net::LOAD_DO_NOT_SEND_COOKIES);
   } else {
-    base::MessageLoopProxy::current()->PostTask(
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(&WebstorePrivateInstallBundleFunction::OnFetchComplete,
                    this, GURL(), nullptr));