Upstream Chrome on iOS source code [10/11].

ios/chrome/test/earl_grey/chrome_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/chrome/test/earl_grey/chrome_actions.h"
+
+#import "base/mac/foundation_util.h"
+#import "ios/chrome/browser/ui/collection_view/cells/collection_view_switch_item.h"
+#import "ios/chrome/test/app/chrome_test_util.h"
+#import "ios/web/public/test/earl_grey/web_view_actions.h"
+
+namespace chrome_test_util {
+
+id<GREYAction> longPressElementForContextMenu(const std::string& element_id,
+                                              bool triggers_context_menu) {
+  return webViewLongPressElementForContextMenu(
+      chrome_test_util::GetCurrentWebState(), element_id,
+      triggers_context_menu);
+}
+
+id<GREYAction> turnCollectionViewSwitchOn(BOOL on) {
+  id<GREYMatcher> constraints = grey_not(grey_systemAlertViewShown());
+  NSString* actionName =
+      [NSString stringWithFormat:@"Turn collection view switch to %@ state",
+                                 on ? @"ON" : @"OFF"];
+  return [GREYActionBlock
+      actionWithName:actionName
+         constraints:constraints
+        performBlock:^BOOL(id collectionViewCell,
+                           __strong NSError** errorOrNil) {
+          CollectionViewSwitchCell* switchCell =
+              base::mac::ObjCCastStrict<CollectionViewSwitchCell>(
+                  collectionViewCell);
+          UISwitch* switchView = switchCell.switchView;
+          if (switchView.on ^ on) {
+            id<GREYAction> longPressAction = [GREYActions
+                actionForLongPressWithDuration:kGREYLongPressDefaultDuration];
+            return [longPressAction perform:switchView error:errorOrNil];
+          }
+          return YES;
+        }];
+}
+
+}  // namespace chrome_test_util