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diff --git a/chromium/components/password_manager/core/browser/credential_manager_impl.h b/chromium/components/password_manager/core/browser/credential_manager_impl.h
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+++ b/chromium/components/password_manager/core/browser/credential_manager_impl.h
@@ -0,0 +1,90 @@
+// Copyright 2017 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_CREDENTIAL_MANAGER_IMPL_H_
+#define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_CREDENTIAL_MANAGER_IMPL_H_
+
+#include "components/password_manager/core/browser/credential_manager_password_form_manager.h"
+#include "components/password_manager/core/browser/credential_manager_pending_prevent_silent_access_task.h"
+#include "components/password_manager/core/browser/credential_manager_pending_request_task.h"
+#include "components/password_manager/core/common/credential_manager_types.h"
+#include "components/prefs/pref_member.h"
+
+namespace password_manager {
+
+using StoreCallback = base::OnceCallback<void()>;
+using PreventSilentAccessCallback = base::OnceCallback<void()>;
+using GetCallback =
+    base::OnceCallback<void(CredentialManagerError,
+                            const base::Optional<CredentialInfo>&)>;
+
+// Class implementing Credential Manager methods Store, PreventSilentAccess
+// and Get in a platform independent way. Each method takes a callback as an
+// argument and runs the callback with the result. Platform specific code
+// and UI invocations are performed by PasswordManagerClient taken in
+// constructor.
+class CredentialManagerImpl
+    : public CredentialManagerPendingPreventSilentAccessTaskDelegate,
+      public CredentialManagerPendingRequestTaskDelegate,
+      public CredentialManagerPasswordFormManagerDelegate {
+ public:
+  explicit CredentialManagerImpl(PasswordManagerClient* client);
+  ~CredentialManagerImpl() override;
+
+  void Store(const CredentialInfo& credential, StoreCallback callback);
+  void PreventSilentAccess(PreventSilentAccessCallback callback);
+  void Get(CredentialMediationRequirement mediation,
+           bool include_passwords,
+           const std::vector<GURL>& federations,
+           GetCallback callback);
+
+  // CredentialManagerPendingRequestTaskDelegate:
+  // Exposed publicly for testing.
+  bool IsZeroClickAllowed() const override;
+
+  // Returns FormDigest for the current URL.
+  // Exposed publicly for testing.
+  PasswordStore::FormDigest GetSynthesizedFormForOrigin() const;
+
+ private:
+  // CredentialManagerPendingRequestTaskDelegate:
+  GURL GetOrigin() const override;
+  void SendCredential(const SendCredentialCallback& send_callback,
+                      const CredentialInfo& info) override;
+  void SendPasswordForm(const SendCredentialCallback& send_callback,
+                        CredentialMediationRequirement mediation,
+                        const autofill::PasswordForm* form) override;
+  PasswordManagerClient* client() const override;
+
+  // CredentialManagerPendingPreventSilentAccessTaskDelegate:
+  PasswordStore* GetPasswordStore() override;
+  void DoneRequiringUserMediation() override;
+
+  // CredentialManagerPasswordFormManagerDelegate:
+  void OnProvisionalSaveComplete() override;
+
+  GURL GetLastCommittedURL() const;
+
+  PasswordManagerClient* client_;
+
+  // Set to false to disable automatic signing in.
+  BooleanPrefMember auto_signin_enabled_;
+
+  // Used to store or update a credential. Calls OnProvisionalSaveComplete
+  // on this delegate.
+  std::unique_ptr<CredentialManagerPasswordFormManager> form_manager_;
+  // Retrieves credentials from the PasswordStore and calls
+  // SendCredential on this delegate. SendCredential then runs a callback
+  // which was passed as an argument to Get().
+  std::unique_ptr<CredentialManagerPendingRequestTask> pending_request_;
+  // Notifies the PasswordStore that the origin requires user mediation.
+  // Calls DoneRequiringUserMediation on this delegate.
+  std::unique_ptr<CredentialManagerPendingPreventSilentAccessTask>
+      pending_require_user_mediation_;
+
+  DISALLOW_COPY_AND_ASSIGN(CredentialManagerImpl);
+};
+
+}  // namespace password_manager
+
+#endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_CREDENTIAL_MANAGER_IMPL_H_