Add metrics for PasswordForm submission types

components/autofill/core/common/password_form.h

 // Copyright 2013 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 COMPONENTS_AUTOFILL_CORE_COMMON_PASSWORD_FORM_H__
 #define COMPONENTS_AUTOFILL_CORE_COMMON_PASSWORD_FORM_H__
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 66 matching lines @@
   enum class Layout {
     // Forms which either do not need to be classified, or cannot be classified
     // meaningfully.
     LAYOUT_OTHER,
     // Login and signup forms combined in one <form>, to distinguish them from,
     // e.g., change-password forms.
     LAYOUT_LOGIN_AND_SIGNUP,
     LAYOUT_LAST = LAYOUT_LOGIN_AND_SIGNUP
   };
 
+  // Events observed by the Password Manager that indicate either that a form is
+  // potentially being submitted, or that a form has already been successfully
+  // submitted. Recorded into a UMA histogram, so order of enumerators should
+  // not be changed.
+  enum class SubmissionIndicatorEvent {
+    NONE,
+    HTML_FORM_SUBMISSION,
+    SAME_DOCUMENT_NAVIGATION,
+    XHR_SUCCEEDED,
+    FRAME_DETACHED,
+    MANUAL_SAVE,
+    SUBMISSION_INDICATOR_EVENT_COUNT
+  };
+
   // The "Realm" for the sign-on. This is scheme, host, port for SCHEME_HTML.
   // Dialog based forms also contain the HTTP realm. Android based forms will
   // contain a string of the form "android://<hash of cert>@<package name>"
   //
   // The signon_realm is effectively the primary key used for retrieving
   // data from the database, so it must not be empty.
   std::string signon_realm;
 
   // An origin URL consists of the scheme, host, port and path; the rest is
   // stripped. This is the primary data used by the PasswordManager to decide
@@ skipping 174 matching lines @@
   // If true, this match was found using public suffix matching.
   bool is_public_suffix_match;
 
   // If true, this is a credential saved through an Android application, and
   // found using affiliation-based match.
   bool is_affiliation_based_match;
 
   // If true, this form looks like SignUp form according to local heuristics.
   bool does_look_like_signup_form;
 
+  // The type of the event that was taken as an indication that this form is
+  // being or has already been submitted. This field is not persisted and filled
+  // out only for submitted forms.
+  SubmissionIndicatorEvent submission_event;
+
   // Return true if we consider this form to be a change password form.
   // We use only client heuristics, so it could include signup forms.
   bool IsPossibleChangePasswordForm() const;
 
   // Return true if we consider this form to be a change password form
   // without username field. We use only client heuristics, so it could
   // include signup forms.
   bool IsPossibleChangePasswordFormWithoutUsername() const;
 
   // Equality operators for testing.
@@ skipping 17 matching lines @@
 };
 
 // Converts a vector of possible usernames to string.
 base::string16 OtherPossibleUsernamesToString(
     const PossibleUsernamesVector& possible_usernames);
 
 // For testing.
 std::ostream& operator<<(std::ostream& os, PasswordForm::Layout layout);
 std::ostream& operator<<(std::ostream& os, const PasswordForm& form);
 std::ostream& operator<<(std::ostream& os, PasswordForm* form);
+std::ostream& operator<<(
+    std::ostream& os,
+    PasswordForm::SubmissionIndicatorEvent submission_event);
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_COMMON_PASSWORD_FORM_H__