Add new app banner metrics using InstallableStatusCode.

chrome/browser/banners/app_banner_metrics.cc

Index: chrome/browser/banners/app_banner_metrics.cc
diff --git a/chrome/browser/banners/app_banner_metrics.cc b/chrome/browser/banners/app_banner_metrics.cc
index 58e373d3b90f8786c20a60c933a28dcd343ea6f0..d597cc636b8db90db481e3add349e7a48cdbc3e9 100644
--- a/chrome/browser/banners/app_banner_metrics.cc
+++ b/chrome/browser/banners/app_banner_metrics.cc
@@ -6,6 +6,7 @@
 
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
+#include "chrome/browser/installable/installable_logging.h"
 
 namespace banners {
 
@@ -16,6 +17,7 @@ const char kMinutesHistogram[] =
     "AppBanners.MinutesFromFirstVisitToBannerShown";
 const char kUserResponseHistogram[] = "AppBanners.UserResponse";
 const char kBeforeInstallEventHistogram[] = "AppBanners.BeforeInstallEvent";
+const char kInstallableErrorCodeHistogram[] = "AppBanners.InstallableErrorCode";
 
 void TrackDismissEvent(int event) {
   DCHECK_LT(DISMISS_EVENT_MIN, event);
@@ -55,4 +57,10 @@ void TrackBeforeInstallEvent(int event) {
   UMA_HISTOGRAM_SPARSE_SLOWLY(kBeforeInstallEventHistogram, event);
 }
 
+void TrackInstallableErrorCode(InstallableErrorCode code) {
+  DCHECK_LE(NO_ERROR_DETECTED, code);
+  DCHECK_LT(code, MAX_ERROR_CODE);
+  UMA_HISTOGRAM_SPARSE_SLOWLY(kInstallableErrorCodeHistogram, code);
+}
+
 }  // namespace banners