Context menu egtests, plus related utilities.

ios/web/shell/test/earl_grey/shell_actions.mm

+// 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.
+
+#import "ios/web/shell/test/earl_grey/shell_actions.h"
+
+#import "ios/web/public/test/earl_grey/web_view_actions.h"
+#import "ios/web/shell/test/app/web_shell_test_util.h"
+
+namespace web {
+
+id<GREYAction> longPressElementForContextMenu(const std::string& element_id,
+                                              bool triggers_context_menu) {
+  return webViewLongPressElementForContextMenu(
+      shell_test_util::GetCurrentWebState(), element_id, triggers_context_menu);
+}
+
+}  // namespace web