Improve logging in password manager internals page

components/password_manager/core/browser/password_manager_client.h

 // 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.
 
 #ifndef COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_CLIENT_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_CLIENT_H_
 
 #include "base/metrics/field_trial.h"
 #include "components/autofill/core/common/password_form.h"
 #include "components/autofill/core/common/password_form_fill_data.h"
@@ skipping 34 matching lines @@
   virtual bool IsSyncAccountCredential(
       const std::string& username, const std::string& origin) const = 0;
 
   // Called when all autofill results have been computed. Client can use
   // this signal to report statistics. Default implementation is a noop.
   virtual void AutofillResultsComputed() {}
 
   // Informs the embedder of a password form that can be saved if the user
   // allows it. The embedder is not required to prompt the user if it decides
   // that this form doesn't need to be saved.
-  virtual void PromptUserToSavePassword(
+  // Returns true if the prompt was indeed displayed.
+  virtual bool PromptUserToSavePassword(
       scoped_ptr<PasswordFormManager> form_to_save) = 0;
 
   // Called when a password is saved in an automated fashion. Embedder may
   // inform the user that this save has occured.
   virtual void AutomaticPasswordSave(
       scoped_ptr<PasswordFormManager> saved_form_manager) = 0;
 
   // Called when a password is autofilled. |best_matches| contains the
   // PasswordForm into which a password was filled: the client may choose to
   // save this to the PasswordStore, for example. Default implementation is a
@@ skipping 67 matching lines @@
                                    bool zero_click_only,
                                    const std::vector<GURL>& federations) {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PasswordManagerClient);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_PASSWORD_MANAGER_CLIENT_H_