Allow hosted files to be pinned behind flag

Bug: 1115028
Change-Id: I56e07ed021b97ab36a93ffb1e8724c2c49a7a2ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2355709Reviewed-by: Sergei Datsenko <dats@chromium.org>
Commit-Queue: Austin Tankiang <austinct@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798077}

chrome/browser/chromeos/extensions/file_manager/private_api_strings.cc

@@ -62,6 +62,10 @@ ExtensionFunction::ResponseAction FileManagerPrivateGetStringsFunction::Run() {
   dict->SetBoolean(
       "FILTERS_IN_RECENTS_ENABLED",
       base::FeatureList::IsEnabled(chromeos::features::kFiltersInRecents));
+  dict->SetBoolean(
+      "DRIVE_BIDIRECTIONAL_NATIVE_MESSAGING_ENABLED",
+      base::FeatureList::IsEnabled(
+          chromeos::features::kDriveFsBidirectionalNativeMessaging));
 
   dict->SetString("UI_LOCALE", extension_l10n_util::CurrentLocaleOrDefault());
 

ui/file_manager/file_manager/common/js/util.js

@@ -1443,6 +1443,15 @@ util.isTransferDetailsEnabled = () => {
   return loadTimeData.getBoolean('FILES_TRANSFER_DETAILS_ENABLED');
 };
 
+/**
+ * Returns true if Drive bidirectional native messaging is enabled.
+ * @return {boolean}
+ */
+util.isDriveBidirectionalNativeMessagingEnabled = () => {
+  return loadTimeData.getBoolean(
+      'DRIVE_BIDIRECTIONAL_NATIVE_MESSAGING_ENABLED');
+};
+
 /**
  * Retrieves all entries inside the given |rootEntry|.
  * @param {!DirectoryEntry} rootEntry

ui/file_manager/file_manager/foreground/js/actions_model.js

@@ -191,7 +191,8 @@ class DriveToggleOfflineAction {
       entries, metadataModel, driveSyncHandler, ui, value, onExecute) {
     const actionableEntries = entries.filter(entry => {
       const metadata = metadataModel.getCache([entry], ['hosted', 'pinned'])[0];
-      if (metadata.hosted) {
+      if (!util.isDriveBidirectionalNativeMessagingEnabled() &&
+          metadata.hosted) {
         return false;
       }
       if (metadata.pinned === value) {