Whitelist fileSystemProvider API to Secure Shell app

chrome/common/extensions/api/_manifest_features.json

Index: chrome/common/extensions/api/_manifest_features.json
diff --git a/chrome/common/extensions/api/_manifest_features.json b/chrome/common/extensions/api/_manifest_features.json
index 55bd04076c327f7590284704f7e1fbae2703dd91..370e7d65f9234f8cbb79c3b3bf39f3ff1940cd7d 100644
--- a/chrome/common/extensions/api/_manifest_features.json
+++ b/chrome/common/extensions/api/_manifest_features.json
@@ -145,10 +145,18 @@
       "location": "component"
     }
   ],
-  "file_system_provider_capabilities": {
+  "file_system_provider_capabilities": [{
     "channel": "stable",
     "extension_types": ["extension", "platform_app"]
-  },
+  }, {
+    "channel": "stable",
+    "extension_types": ["legacy_packaged_app"],
+    "platforms": ["chromeos"],
+    "whitelist": [
+      "0EA6B717932AD64C469C1CCB6911457733295907",  // http://crbug.com/673004
+      "58B0C2968C335964D5433E89CA4D86628A0E3D4B"   // http://crbug.com/673004
+    ]
+  }],
   "homepage_url": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app"]