Upstream (most of) ios/web/public

ios/web/user_metrics.cc

Index: ios/web/user_metrics.cc
diff --git a/ios/web/user_metrics.cc b/ios/web/user_metrics.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b6ac484e6a7454b15aa60699725fa86625b3ecec
--- /dev/null
+++ b/ios/web/user_metrics.cc
@@ -0,0 +1,36 @@
+// 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 {
+
+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