[Merge in M47] Do not involve PasswordManagerDriver in filling HTTP-auth forms; also check realm

components/password_manager/core/browser/login_model.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_LOGIN_MODEL_H_
 #define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_LOGIN_MODEL_H_
 
+#include <string>
+
+#include "base/macros.h"
 #include "base/strings/string16.h"
+#include "components/autofill/core/common/password_form.h"
 
 namespace password_manager {
 
-// Simple Model & Observer interfaces for a LoginView to facilitate exchanging
-// information.
+// A base class for the http-auth UI to communicate with the provider of stored
+// credentials.
 class LoginModelObserver {
  public:
-  // Called by the model when a username,password pair has been identified
-  // as a match for the pending login prompt.
-  virtual void OnAutofillDataAvailable(const base::string16& username,
-                                       const base::string16& password) = 0;
+  LoginModelObserver();
+
+  // Called by the model when |credentials| has been identified as a match for
+  // the pending login prompt. Checks that the realm matches, and passes
+  // |credentials| to OnAutofillDataAvailableInternal.
+  void OnAutofillDataAvailable(const autofill::PasswordForm& credentials);
 
   virtual void OnLoginModelDestroying() = 0;
 
+  // To be called by the model during AddObserverAndDeliverCredentials.
+  void set_signon_realm(const std::string& signon_realm) {
+    signon_realm_ = signon_realm;
+  }
+
  protected:
-  virtual ~LoginModelObserver() {}
+  virtual ~LoginModelObserver();
+
+  virtual void OnAutofillDataAvailableInternal(
+      const base::string16& username,
+      const base::string16& password) = 0;
+
+ private:
+  // Signon realm for which this observer wishes to receive credentials.
+  std::string signon_realm_;
+
+  DISALLOW_COPY_AND_ASSIGN(LoginModelObserver);
 };
 
+// Corresponding Model interface to be inherited by the provider of stored
+// passwords.
 class LoginModel {
  public:
-  // Add an observer interested in the data from the model.
-  virtual void AddObserver(LoginModelObserver* observer) = 0;
+  LoginModel();
+
+  // Add an observer interested in the data from the model. Also, requests that
+  // the model sends a callback to |observer| with stored credentials for
+  // |observed_form|.
+  virtual void AddObserverAndDeliverCredentials(
+      LoginModelObserver* observer,
+      const autofill::PasswordForm& observed_form) = 0;
+
   // Remove an observer from the model.
   virtual void RemoveObserver(LoginModelObserver* observer) = 0;
 
  protected:
-  virtual ~LoginModel() {}
+  virtual ~LoginModel();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(LoginModel);
 };
 
 }  // namespace password_manager
 
 #endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_LOGIN_MODEL_H_