Move the thread hop for UMA user actions from content:: to base::.

ios/web/user_metrics.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ios/web/public/user_metrics.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/metrics/user_metrics.h"
 #include "ios/web/public/web_thread.h"
 
 namespace web {
 
+// TODO(beaudoin): Get rid of these methods now that the base:: version does
+// thread hopping. Tracked in crbug.com/601483.
 void RecordAction(const base::UserMetricsAction& action) {
-  if (!WebThread::CurrentlyOn(WebThread::UI)) {
-    WebThread::PostTask(WebThread::UI, FROM_HERE,
-                        base::Bind(&web::RecordAction, action));
-    return;
-  }
-
   base::RecordAction(action);
 }
 
 void RecordComputedAction(const std::string& action) {
-  if (!WebThread::CurrentlyOn(WebThread::UI)) {
-    WebThread::PostTask(WebThread::UI, FROM_HERE,
-                        base::Bind(&web::RecordComputedAction, action));
-    return;
-  }
-
   base::RecordComputedAction(action);
 }
 
 }  // namespace web