UMA Metrics for the user menu, including vasquette-detection

chrome/browser/signin/signin_header_helper.h

Index: chrome/browser/signin/signin_header_helper.h
diff --git a/chrome/browser/signin/signin_header_helper.h b/chrome/browser/signin/signin_header_helper.h
index 0b0257b63d299f13c7eb40a7e9326759ea415e1e..3c10c0c0888c15962076fb0be0c728d74948f71d 100644
--- a/chrome/browser/signin/signin_header_helper.h
+++ b/chrome/browser/signin/signin_header_helper.h
@@ -19,7 +19,7 @@ class ProfileIOData;
 namespace signin {
 
 // Profile mode flags.
-enum PROFILE_MODE {
+enum ProfileMode {
   PROFILE_MODE_DEFAULT = 0,
   // Incognito mode disabled by enterprise policy or by parental controls.
   PROFILE_MODE_INCOGNITO_DISABLED = 1 << 0,
@@ -27,6 +27,18 @@ enum PROFILE_MODE {
   PROFILE_MODE_ADD_ACCOUNT_DISABLED = 1 << 1
 };
 
+// The ServiceType specified by GAIA in the response header accompanying the 204
+// response. This indicates the action Chrome is supposed to lead the user to
+// perform.
+enum GAIAServiceType {
+  GAIA_SERVICE_TYPE_NONE = 0,                 // No GAIA response header.
+  GAIA_SERVICE_TYPE_SIGNOUT,                  // Logout all existing sessions.
+  GAIA_SERVICE_TYPE_SIGNOUTOPTIONS_INCOGNITO, // Open an incognito tab.
+  GAIA_SERVICE_TYPE_ADDSESSION,               // Add a secondary account.
+  GAIA_SERVICE_TYPE_REAUTH,                   // Re-authenticate an account.
+  GAIA_SERVICE_TYPE_DEFAULT,                  // All other cases.
+};
+
 // Add X-Chrome-Connected header to all Gaia requests from a connected profile,
 // with the exception of requests from gaia webview. Must be called on IO
 // thread.