[PasswordManager] Improve detection of ignorable change password forms.

components/autofill/core/common/save_password_progress_logger.cc

 // Copyright 2014 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.
 
 #include "components/autofill/core/common/save_password_progress_logger.h"
 
 #include <algorithm>
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 193 matching lines @@
     case SavePasswordProgressLogger::STRING_CLIENT_CHECK_PRESENT:
       return "IsPasswordManagerEnabledForCurrentPage";
     case SavePasswordProgressLogger::STRING_SHOW_LOGIN_PROMPT_METHOD:
       return "ShowLoginPrompt";
     case SavePasswordProgressLogger::STRING_NEW_UI_STATE:
       return "The new state of the UI";
     case SavePasswordProgressLogger::STRING_FORM_NOT_AUTOFILLED:
       return "The observed form will not be autofilled";
     case SavePasswordProgressLogger::STRING_CHANGE_PASSWORD_FORM:
       return "Not saving password for a change password form";
+    case SavePasswordProgressLogger::PROCESS_FRAME_METHOD:
+      return "PasswordFormManager::ProcessFrame";
     case SavePasswordProgressLogger::STRING_INVALID:
       return "INVALID";
       // Intentionally no default: clause here -- all IDs need to get covered.
   }
   NOTREACHED();  // Win compilers don't believe this is unreachable.
   return std::string();
 }
 
 // Removes privacy sensitive parts of |url| (currently all but host and scheme).
 std::string ScrubURL(const GURL& url) {
@@ skipping 123 matching lines @@
 
 void SavePasswordProgressLogger::LogValue(StringID label, const Value& log) {
   std::string log_string;
   bool conversion_to_string_successful = base::JSONWriter::WriteWithOptions(
       &log, base::JSONWriter::OPTIONS_PRETTY_PRINT, &log_string);
   DCHECK(conversion_to_string_successful);
   SendLog(GetStringFromID(label) + ": " + log_string);
 }
 
 }  // namespace autofill