[App banners] Add UMA metrics

chrome/browser/android/banners/app_banner_metrics_ids.h

Index: chrome/browser/android/banners/app_banner_metrics_ids.h
diff --git a/chrome/browser/android/banners/app_banner_metrics_ids.h b/chrome/browser/android/banners/app_banner_metrics_ids.h
deleted file mode 100644
index f2d9325446dc090f837efd23053b8c0c4c466ba8..0000000000000000000000000000000000000000
--- a/chrome/browser/android/banners/app_banner_metrics_ids.h
+++ /dev/null
@@ -1,17 +0,0 @@
-// 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_BANNERS_APP_BANNER_METRICS_IDS_H_
-#define CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_METRICS_IDS_H_
-
-namespace banners {
-
-#define DEFINE_APP_BANNER_METRICS_ID_ENUM_START(identifier) enum identifier {
-#define DEFINE_APP_BANNER_METRICS_ID(identifier,int) identifier = int,
-#define DEFINE_APP_BANNER_METRICS_ID_ENUM_END() };
-#include "chrome/browser/android/banners/app_banner_metrics_id_list.h"
-
-};  // namespace banners
-
-#endif  // CHROME_BROWSER_ANDROID_BANNERS_APP_BANNER_METRICS_IDS_H_