Make AppBannerInfoBar install WebAPK.

chrome/browser/banners/app_banner_metrics.h

Index: chrome/browser/banners/app_banner_metrics.h
diff --git a/chrome/browser/banners/app_banner_metrics.h b/chrome/browser/banners/app_banner_metrics.h
index 1ca8212631da3a7d4d196392c6d42130a12307ea..1b5c055fa514837c78d886f4831b12838d995fa4 100644
--- a/chrome/browser/banners/app_banner_metrics.h
+++ b/chrome/browser/banners/app_banner_metrics.h
@@ -24,7 +24,8 @@ enum DisplayEvent {
   DISPLAY_EVENT_WEB_APP_BANNER_REQUESTED = 10,
   DISPLAY_EVENT_NATIVE_APP_BANNER_CREATED = 11,
   DISPLAY_EVENT_WEB_APP_BANNER_CREATED = 12,
-  DISPLAY_EVENT_MAX = 13,
+  DISPLAY_EVENT_WEBAPK_BANNER_CREATED = 13,
+  DISPLAY_EVENT_MAX = 14,
 };
 
 // This enum backs a UMA histogram, so it should be treated as append-only.
@@ -34,7 +35,11 @@ enum InstallEvent {
   INSTALL_EVENT_NATIVE_APP_INSTALL_STARTED = 22,
   INSTALL_EVENT_NATIVE_APP_INSTALL_COMPLETED = 23,
   INSTALL_EVENT_WEB_APP_INSTALLED = 24,
-  INSTALL_EVENT_MAX = 25,
+  INSTALL_EVENT_WEBAPK_INSTALL_TRIGGERED = 25,
+  INSTALL_EVENT_WEBAPK_INSTALL_STARTED = 26,
+  INSTALL_EVENT_WEBAPK_INSTALL_COMPLETED = 27,
+  INSTALL_EVENT_WEBAPK_INSTALL_FAILED = 28,
+  INSTALL_EVENT_MAX = 29,
 };
 
 // This enum backs a UMA histogram, so it should be treated as append-only.
@@ -59,7 +64,10 @@ enum UserResponse {
   USER_RESPONSE_WEB_APP_DISMISSED = 4,
   USER_RESPONSE_NATIVE_APP_IGNORED = 5,
   USER_RESPONSE_WEB_APP_IGNORED = 6,
-  USER_RESPONSE_MAX = 7,
+  USER_RESPONSE_WEBAPK_ACCEPTED = 7,
+  USER_RESPONSE_WEBAPK_DISMISSED = 8,
+  USER_RESPONSE_WEBAPK_IGNORED = 9,
+  USER_RESPONSE_MAX = 10,
 };
 
 // This enum backs a UMA histogram, so it should be treated as append-only.