Add new app banner metrics using InstallableStatusCode.

chrome/browser/banners/app_banner_metrics.h

 // Copyright 2015 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_BANNERS_APP_BANNER_METRICS_H_
 #define CHROME_BROWSER_BANNERS_APP_BANNER_METRICS_H_
 
+#include "chrome/browser/installable/installable_logging.h"
+
 namespace banners {
 
 // This enum backs a UMA histogram, so it should be treated as append-only.
 enum DisplayEvent {
   DISPLAY_EVENT_MIN = 0,
   DISPLAY_EVENT_BANNER_REQUESTED = 1,
   DISPLAY_EVENT_BLOCKED_PREVIOUSLY = 2,
   DISPLAY_EVENT_PROMOTED_TOO_MANY_OTHERS = 3,
   DISPLAY_EVENT_CREATED = 4,
   DISPLAY_EVENT_INSTALLED_PREVIOUSLY = 5,
@@ skipping 53 matching lines @@
   BEFORE_INSTALL_EVENT_PROMPT_NOT_CALLED_AFTER_PREVENT_DEFAULT = 6,
   BEFORE_INSTALL_EVENT_MAX = 7,
 };
 
 extern const char kDismissEventHistogram[];
 extern const char kDisplayEventHistogram[];
 extern const char kInstallEventHistogram[];
 extern const char kMinutesHistogram[];
 extern const char kUserResponseHistogram[];
 extern const char kBeforeInstallEventHistogram[];
+extern const char kInstallableStatusCodeHistogram[];
 
 void TrackDismissEvent(int event);
 void TrackDisplayEvent(int event);
 void TrackInstallEvent(int event);
 void TrackMinutesFromFirstVisitToBannerShown(int minutes);
 void TrackUserResponse(int event);
 void TrackBeforeInstallEvent(int event);
+void TrackInstallableStatusCode(InstallableStatusCode code);
 
 };  // namespace banners
 
 #endif  // CHROME_BROWSER_BANNERS_APP_BANNER_METRICS_H_