[ios] Add ScreenTime experiment flag

Bug: 1123704
Change-Id: Ifb025407075376c7046c79e361bdc4c690db905d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2386843Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: Mike Dougherty <michaeldo@chromium.org>
Commit-Queue: edchin <edchin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#804357}

chrome/browser/flag-metadata.json

@@ -4019,6 +4019,11 @@
     "owners": [ "bingler", "chlily" ],
     "expiry_milestone": 90
   },
+  {
+    "name": "screen-time-integration-ios",
+    "owners": [ "edchin", "bling-flags@google.com" ],
+    "expiry_milestone": 92
+  },
   {
     "name": "scroll-to-text-ios",
     "owners": [ "tmartino" ],

ios/chrome/browser/flags/BUILD.gn

@@ -56,6 +56,7 @@ source_set("flags") {
     "//ios/chrome/browser/ui/fullscreen:feature_flags",
     "//ios/chrome/browser/ui/infobars:feature_flags",
     "//ios/chrome/browser/ui/page_info:features",
+    "//ios/chrome/browser/ui/screen_time:feature_flags",
     "//ios/chrome/browser/ui/settings/autofill:feature_flags",
     "//ios/chrome/browser/ui/tab_grid:features",
     "//ios/chrome/browser/ui/table_view:feature_flags",

ios/chrome/browser/flags/about_flags.mm

@@ -68,6 +68,7 @@
 #import "ios/chrome/browser/ui/fullscreen/fullscreen_features.h"
 #import "ios/chrome/browser/ui/infobars/infobar_feature.h"
 #import "ios/chrome/browser/ui/page_info/features.h"
+#include "ios/chrome/browser/ui/screen_time/features.h"
 #include "ios/chrome/browser/ui/settings/autofill/features.h"
 #import "ios/chrome/browser/ui/tab_grid/features.h"
 #import "ios/chrome/browser/ui/table_view/feature_flags.h"
@@ -682,6 +683,10 @@ const flags_ui::FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kEnableCloseAllTabsConfirmationName,
      flag_descriptions::kEnableCloseAllTabsConfirmationDescription,
      flags_ui::kOsIos, FEATURE_VALUE_TYPE(kEnableCloseAllTabsConfirmation)},
+    {"screen-time-integration-ios",
+     flag_descriptions::kScreenTimeIntegrationName,
+     flag_descriptions::kScreenTimeIntegrationDescription, flags_ui::kOsIos,
+     FEATURE_VALUE_TYPE(kScreenTimeIntegration)},
 };
 
 bool SkipConditionalFeatureEntry(const flags_ui::FeatureEntry& entry) {

ios/chrome/browser/flags/ios_chrome_flag_descriptions.cc

@@ -426,6 +426,10 @@ const char kSaveCardInfobarMessagesUIName[] = "Save Card Infobar Messages UI";
 const char kSaveCardInfobarMessagesUIDescription[] =
     "When enabled, Save Card Infobar uses the new Messages UI.";
 
+const char kScreenTimeIntegrationName[] = "Enables ScreenTime Integration";
+const char kScreenTimeIntegrationDescription[] =
+    "Enables integration with ScreenTime in iOS 14.0 and above.";
+
 const char kScrollToTextIOSName[] = "Enable Scroll to Text";
 const char kScrollToTextIOSDescription[] =
     "When enabled, opening a URL with a text fragment (e.g., "

ios/chrome/browser/flags/ios_chrome_flag_descriptions.h

@@ -367,6 +367,11 @@ extern const char kSafetyCheckIOSDescription[];
 extern const char kSaveCardInfobarMessagesUIName[];
 extern const char kSaveCardInfobarMessagesUIDescription[];
 
+// Title and description for the flag to enable integration with the ScreenTime
+// system.
+extern const char kScreenTimeIntegrationName[];
+extern const char kScreenTimeIntegrationDescription[];
+
 // Title and description for the flag to enable the Scroll to Text feature.
 extern const char kScrollToTextIOSName[];
 extern const char kScrollToTextIOSDescription[];

ios/chrome/browser/ui/screen_time/BUILD.gn

+# Copyright 2020 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.
+
+source_set("feature_flags") {
+  sources = [
+    "features.h",
+    "features.mm",
+  ]
+  configs += [ "//build/config/compiler:enable_arc" ]
+  deps = [ "//base" ]
+}

ios/chrome/browser/ui/screen_time/OWNERS

+edchin@chromium.org
+michaeldo@chromium.org
+
+# TEAM: ios-directory-owners@chromium.org
+# OS: iOS
\ No newline at end of file

ios/chrome/browser/ui/screen_time/features.h

+// Copyright 2020 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_CHROME_BROWSER_UI_SCREEN_TIME_FEATURES_H_
+#define IOS_CHROME_BROWSER_UI_SCREEN_TIME_FEATURES_H_
+
+#include "base/feature_list.h"
+
+// Feature flag to enable ScreenTime integration.
+extern const base::Feature kScreenTimeIntegration;
+
+// Returns true if ScreenTime integration is enabled.
+bool IsScreenTimeIntegrationEnabled();
+
+#endif  // IOS_CHROME_BROWSER_UI_SCREEN_TIME_FEATURES_H_

ios/chrome/browser/ui/screen_time/features.mm

+// Copyright 2020 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/browser/ui/screen_time/features.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+const base::Feature kScreenTimeIntegration{"ScreenTimeIntegration",
+                                           base::FEATURE_DISABLED_BY_DEFAULT};
+
+bool IsScreenTimeIntegrationEnabled() {
+  if (@available(iOS 14, *)) {
+    return base::FeatureList::IsEnabled(kScreenTimeIntegration);
+  }
+  return false;
+}