Revert of Public Sessions - prompt the user for pageCapture requests

chrome/browser/chromeos/extensions/public_session_permission_helper.h

-// 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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_PUBLIC_SESSION_PERMISSION_HELPER_H_
-#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_PUBLIC_SESSION_PERMISSION_HELPER_H_
-
-#include <memory>
-#include <set>
-
-#include "base/callback_forward.h"
-#include "extensions/common/permissions/api_permission.h"
-#include "extensions/common/permissions/api_permission_set.h"
-
-class ExtensionInstallPrompt;
-
-namespace content {
-class WebContents;
-}
-
-namespace extensions {
-
-class Extension;
-
-namespace permission_helper {
-
-using RequestResolvedCallback = base::Callback<void(const PermissionIDSet&)>;
-using PromptFactory = base::Callback<std::unique_ptr<ExtensionInstallPrompt>(
-    content::WebContents*)>;
-
-// In Public Sessions, extensions (and apps) are force-installed by admin policy
-// so the user does not get a chance to review the permissions for these
-// extensions. This is not acceptable from a security/privacy standpoint, so
-// when an extension uses one of the sensitive APIs for the first time, we show
-// the user a dialog where they can choose whether to allow the extension access
-// to the API.
-//
-// This function sets up the prompt asking the user for additional
-// permission(s), handles the result, caches it, and then runs the callback with
-// the allowed permissions as the argument.
-//
-// The user will be prompted about a certain permission only once, and that
-// choice will be cached and used in any subsequent requests that use the same
-// permission. If a request comes for a permission that is currently being
-// prompted, its callback will be queued up to be invoked when the prompt is
-// resolved.
-//
-// Caller must ensure that web_contents is valid. Must be called on UI thread.
-//
-// Passing in a null prompt_factory (permission_helper::PromptFactory())
-// callback gets the default behaviour (ie. it is is used only for tests).
-void HandlePermissionRequest(const Extension& extension,
-                             const PermissionIDSet& requested_permissions,
-                             content::WebContents* web_contents,
-                             const RequestResolvedCallback& callback,
-                             const PromptFactory& prompt_factory);
-
-// Used to completely reset state in between tests.
-void ResetPermissionsForTesting();
-
-}  // namespace permission_helper
-}  // namespace extensions
-
-#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_PUBLIC_SESSION_PERMISSION_HELPER_H_