[ios] Made TestWebStateDelegate and TestJavaScriptDialogPresenter reusable.

ios/web/public/test/fakes/test_web_state_delegate.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 IOS_WEB_PUBLIC_TEST_FAKES_TEST_WEB_STATE_DELEGATE_H_
+#define IOS_WEB_PUBLIC_TEST_FAKES_TEST_WEB_STATE_DELEGATE_H_
+
+#include "ios/web/public/web_state/web_state_delegate.h"
+#import "ios/web/public/test/fakes/test_java_script_dialog_presenter.h"
+
+namespace web {
+
+// Fake WebStateDelegate used for testing purposes.
+class TestWebStateDelegate : public WebStateDelegate {
+ public:
+  // WebStateDelegate overrides:
+  JavaScriptDialogPresenter* GetJavaScriptDialogPresenter(WebState*) override;
+  void LoadProgressChanged(WebState* source, double progress) override;
+  bool HandleContextMenu(WebState* source,
+                         const ContextMenuParams& params) override;
+
+  TestJavaScriptDialogPresenter* GetTestJavaScriptDialogPresenter();
+
+  // True if the WebStateDelegate LoadProgressChanged method has been called.
+  bool load_progress_changed_called() const {
+    return load_progress_changed_called_;
+  }
+
+  // True if the WebStateDelegate HandleContextMenu method has been called.
+  bool handle_context_menu_called() const {
+    return handle_context_menu_called_;
+  }
+
+  // True if the WebStateDelegate GetJavaScriptDialogPresenter method has been
+  // called.
+  bool get_java_script_dialog_presenter_called() const {
+    return get_java_script_dialog_presenter_called_;
+  }
+
+ private:
+  bool load_progress_changed_called_ = false;
+  bool handle_context_menu_called_ = false;
+  bool get_java_script_dialog_presenter_called_ = false;
+  TestJavaScriptDialogPresenter java_script_dialog_presenter_;
+};
+
+}  // namespace web
+
+#endif  // IOS_WEB_PUBLIC_TEST_FAKES_TEST_WEB_STATE_DELEGATE_H_