Upstream ios/web/navigation

ios/web/navigation/navigation_manager_delegate.h

+// Copyright 2015 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 IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_DELEGATE_H_
+#define IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_DELEGATE_H_
+
+namespace web {
+
+struct LoadCommittedDetails;
+class WebState;
+
+// Delegate for NavigationManager to hand off parts of the navigation flow.
+// TODO(stuartmorgan): See if this can be eliminated by moving more
+class NavigationManagerDelegate {
+ public:
+  virtual ~NavigationManagerDelegate() {}
+
+  // Instructs the delegate to begin navigating to the pending entry.
+  // TODO(stuartmorgan): Remove this once more navigation logic moves to
+  // NavigationManagerImpl.
+  virtual void NavigateToPendingEntry() = 0;
+
+  // Informs the delegate that a navigation item has been commited.
+  virtual void OnNavigationItemCommitted(
+      const LoadCommittedDetails& load_details) = 0;
+
+  // Returns the WebState associated with this delegate.
+  virtual WebState* GetWebState() = 0;
+};
+
+}  // namespace web
+
+#endif  // IOS_WEB_NAVIGATION_NAVIGATION_MANAGER_DELEGATE_H_