Support field trial check for offline pages feature

BUG=491352
TEST=none

Review URL: https://codereview.chromium.org/1257103005

Cr-Commit-Position: refs/heads/master@{#341661}

1 files changed, 28 insertions, 0 deletions

diff --git a/components/offline_pages/offline_page_feature.cc b/components/offline_pages/offline_page_feature.cc
new file mode 100644
index 0000000..2d63da7
--- /dev/null
+++ b/components/offline_pages/offline_page_feature.cc
@@ -0,0 +1,28 @@
+// 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.
+
+#include "components/offline_pages/offline_page_feature.h"
+
+#include <string>
+
+#include "base/metrics/field_trial.h"
+
+#if defined(OS_ANDROID)
+
+namespace offline_pages {
+
+namespace {
+const char kOfflinePagesFieldTrialName[] = "OfflinePages";
+const char kOfflinePagesFieldTrialEnabledGroupName[] = "Enabled";
+}  // namespace
+
+bool IsOfflinePagesEnabled() {
+  std::string group_name =
+      base::FieldTrialList::FindFullName(kOfflinePagesFieldTrialName);
+  return group_name == kOfflinePagesFieldTrialEnabledGroupName;
+}
+
+}  // namespace offline_pages
+
+#endif