Let MetricsService know about some Android Activities

chrome/browser/android/activity_type_ids.h

Index: chrome/browser/android/activity_type_ids.h
diff --git a/chrome/browser/android/activity_type_ids.h b/chrome/browser/android/activity_type_ids.h
new file mode 100644
index 0000000000000000000000000000000000000000..606f8759519b596cddfa6a33e8807a8c43cb4f5d
--- /dev/null
+++ b/chrome/browser/android/activity_type_ids.h
@@ -0,0 +1,23 @@
+// 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.
+
+#ifndef CHROME_BROWSER_ANDROID_ACTIVITY_TYPE_IDS_H_
+#define CHROME_BROWSER_ANDROID_ACTIVITY_TYPE_IDS_H_
+
+// This file maps Activities on Chrome to specific flags for identification.
+
+namespace ActivityTypeIds {
+
+enum Type {
+#define DEFINE_ACTIVITY_ID(id,value) ACTIVITY_##id = (value),
+#include "activity_type_id_list.h"
+#undef DEFINE_ACTIVITY_ID
+};  // enum Type
+
+// Takes an int corresponding to a Type and returns the corresponding Type.
+Type GetActivityType(int type_id);
+
+}  // namespace ActivityTypeIds
+
+#endif  // CHROME_BROWSER_ANDROID_ACTIVITY_TYPE_IDS_H_