Implement the private API for quick unlock.

chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api.h

+// Copyright 2016 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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_QUICK_UNLOCK_PRIVATE_QUICK_UNLOCK_PRIVATE_API_H_
+#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_QUICK_UNLOCK_PRIVATE_QUICK_UNLOCK_PRIVATE_API_H_
+
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/extensions/chrome_extension_function_details.h"
+#include "chromeos/login/auth/auth_status_consumer.h"
+#include "extensions/browser/extension_function.h"
+
+namespace chromeos {
+class ExtendedAuthenticator;
+}
+
+namespace extensions {
+
+// Implements the chrome.quickUnlockPrivate.getAvailableModes method.

[Devlin, 2016/05/31 22:58:38]

nit: I think these are self-explained by the name and the
DECLARE_EXTENSION_FUNCTION macros.  I'd probably remove these as not necessary
or adding any extra information.

[jdufault, 2016/06/01 00:07:35]

Done.

+class QuickUnlockPrivateGetAvailableModesFunction
+    : public UIThreadExtensionFunction {
+ public:
+  QuickUnlockPrivateGetAvailableModesFunction();
+  DECLARE_EXTENSION_FUNCTION("quickUnlockPrivate.getAvailableModes",
+                             QUICKUNLOCKPRIVATE_GETAVAILABLEMODES);
+
+ protected:
+  ~QuickUnlockPrivateGetAvailableModesFunction() override;
+
+  // ExtensionFunction overrides.
+  ResponseAction Run() override;
+
+ private:
+  ChromeExtensionFunctionDetails chrome_details_;
+
+  DISALLOW_COPY_AND_ASSIGN(QuickUnlockPrivateGetAvailableModesFunction);
+};
+
+// Implements the chrome.quickUnlockPrivate.getActiveModes method.
+class QuickUnlockPrivateGetActiveModesFunction
+    : public UIThreadExtensionFunction {
+ public:
+  QuickUnlockPrivateGetActiveModesFunction();
+  DECLARE_EXTENSION_FUNCTION("quickUnlockPrivate.getActiveModes",
+                             QUICKUNLOCKPRIVATE_GETACTIVEMODES);
+
+ protected:
+  ~QuickUnlockPrivateGetActiveModesFunction() override;
+
+  // ExtensionFunction overrides.
+  ResponseAction Run() override;
+
+ private:
+  ChromeExtensionFunctionDetails chrome_details_;
+
+  DISALLOW_COPY_AND_ASSIGN(QuickUnlockPrivateGetActiveModesFunction);
+};
+
+// Implements the chrome.quickUnlockPrivate.setModes method.
+class QuickUnlockPrivateSetModesFunction : public UIThreadExtensionFunction,
+                                           public chromeos::AuthStatusConsumer {
+ public:
+  // Override how the ExtendedAuthenticator is created. This allows tests to

[Devlin, 2016/05/31 22:58:38]

Can we combine this comment with the one on line 71?

[jdufault, 2016/06/01 00:07:35]

Done.

+  // bypass the cryptohome calls.
+  using CreateAuthenticator =
+      chromeos::ExtendedAuthenticator* (*)(chromeos::AuthStatusConsumer*
+                                               auth_status_consumer);
+
+  QuickUnlockPrivateSetModesFunction();
+
+  // Use the given |allocator| to create an ExtendedAuthenticator instance. This
+  // lets tests intercept authentication calls.
+  static void SetCreateAuthenticatorForTesting(CreateAuthenticator allocator);
+
+  DECLARE_EXTENSION_FUNCTION("quickUnlockPrivate.setModes",
+                             QUICKUNLOCKPRIVATE_SETMODES);
+
+ protected:
+  ~QuickUnlockPrivateSetModesFunction() override;
+
+  // ExtensionFunction overrides.
+  ResponseAction Run() override;
+
+  // AuthStatusConsumer overrides.
+  void OnAuthFailure(const chromeos::AuthFailure& error) override;
+  void OnAuthSuccess(const chromeos::UserContext& user_context) override;
+
+  void ApplyModeChange();
+
+ private:
+  ChromeExtensionFunctionDetails chrome_details_;
+  scoped_refptr<chromeos::ExtendedAuthenticator> extended_authenticator_;
+
+  DISALLOW_COPY_AND_ASSIGN(QuickUnlockPrivateSetModesFunction);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_QUICK_UNLOCK_PRIVATE_QUICK_UNLOCK_PRIVATE_API_H_