Implement newly designed sign-in related histograms for desktop platorms.

chrome/browser/signin/signin_promo.h

Index: chrome/browser/signin/signin_promo.h
diff --git a/chrome/browser/signin/signin_promo.h b/chrome/browser/signin/signin_promo.h
index c4a77f9ad477166b7dee3695fd40ab2dcc00e745..f6f7143112157f74aa296ffa0ee9795a3c466ede 100644
--- a/chrome/browser/signin/signin_promo.h
+++ b/chrome/browser/signin/signin_promo.h
@@ -21,8 +21,10 @@ class PrefRegistrySyncable;
 // Utility functions for sign in promos.
 namespace signin {
 
+const char kSignInPromoQueryKeyAccessPoint[] = "access_point";
 const char kSignInPromoQueryKeyAutoClose[] = "auto_close";
 const char kSignInPromoQueryKeyContinue[] = "continue";
+const char kSignInPromoQueryKeyReason[] = "reason";
 const char kSignInPromoQueryKeySource[] = "source";
 const char kSignInPromoQueryKeyConstrained[] = "constrained";
 const char kSignInPromoQueryKeyShowAccountManagement[] =
@@ -43,24 +45,32 @@ void DidShowPromoAtStartup(Profile* profile);
 void SetUserSkippedPromo(Profile* profile);
 
 // Gets the sign in landing page URL.
-GURL GetLandingURL(const char* option, int value);
+GURL GetLandingURL(signin_metrics::AccessPoint access_point);
 
 // Returns the sign in promo URL wth the given arguments in the query.
-// |source| identifies from where the sign in promo is being called, and is
-// used to record sync promo UMA stats in the context of the source.
+// |access_point| indicates where the sign in is being initiated.
+// |reason| indicates the purpose of using this URL.
 // |auto_close| whether to close the sign in promo automatically when done.
 // |is_constrained} whether to load the URL in a constrained window, false
 // by default.
-GURL GetPromoURL(signin_metrics::Source source, bool auto_close);
-GURL GetPromoURL(signin_metrics::Source source,
+GURL GetPromoURL(signin_metrics::AccessPoint access_point,
+                 signin_metrics::Reason reason,
+                 bool auto_close);
+GURL GetPromoURL(signin_metrics::AccessPoint access_point,
+                 signin_metrics::Reason reason,
                  bool auto_close,
                  bool is_constrained);
 
 // Returns a sign in promo URL specifically for reauthenticating |account_id|.
-GURL GetReauthURL(Profile* profile, const std::string& account_id);
+GURL GetReauthURL(signin_metrics::AccessPoint access_point,
+                  signin_metrics::Reason reason,
+                  Profile* profile,
+                  const std::string& account_id);
 
 // Returns a sign in promo URL specifically for reauthenticating |email|.
-GURL GetReauthURLWithEmail(const std::string& email);
+GURL GetReauthURLWithEmail(signin_metrics::AccessPoint access_point,
+                           signin_metrics::Reason reason,
+                           const std::string& email);
 
 // Gets the next page URL from the query portion of the sign in promo URL.
 GURL GetNextPageURLForPromoURL(const GURL& url);
@@ -71,11 +81,14 @@ GURL GetSigninPartitionURL();
 // Gets the signin URL to be used to display the sign in flow for |mode| in
 // |profile|.
 GURL GetSigninURLFromBubbleViewMode(Profile* profile,
-                                    profiles::BubbleViewMode mode);
+                                    profiles::BubbleViewMode mode,
+                                    signin_metrics::AccessPoint access_point);
 
-// Gets the source from the query portion of the sign in promo URL.
-// The source identifies from where the sign in promo was opened.
-signin_metrics::Source GetSourceForPromoURL(const GURL& url);
+// Gets the access point from the query portion of the sign in promo URL.
+signin_metrics::AccessPoint GetAccessPointForPromoURL(const GURL& url);
+
+// Gets the sign in reason from the query portion of the sign in promo URL.
+signin_metrics::Reason GetSigninReasonForPromoURL(const GURL& url);
 
 // Returns true if the auto_close parameter in the given URL is set to true.
 bool IsAutoCloseEnabledInURL(const GURL& url);