Allow the Chrome Web Store to use chrome.system.* apis

chrome/common/extensions/api/_permission_features.json

 // Copyright (c) 2012 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.
 
 // This features file defines permissions for extension APIs implemented
 // under src/chrome.
 // See extensions/common/features/* to understand this file, in particular
 // feature.h, simple_feature.h, and base_feature_provider.h.
 
 // To add a new whitelisted ID, SHA-1 it and force it to uppercase. In Bash:
@@ skipping 989 matching lines @@
     "channel": "stable",
     "extension_types": ["platform_app"]
   },
   "syncedNotificationsPrivate": {
     "channel": "dev",
     "extension_types": ["platform_app"],
     "whitelist": [
       "34967F9FA3C399E1EC380B443D7331AA93AC445B"  // http://crbug.com/400436
     ]
   },
-  "system.cpu": {
-    "channel": "stable",
-    "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
-  },
-  "system.memory": {
-    "channel": "stable",
-    "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
-  },
-  "system.network": {
-    "channel": "stable",
-    "extension_types": ["platform_app"]
-  },
-  "system.storage": {
-    "channel": "stable",
-    "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
-  },
-  "system.display": {
-    "channel": "stable",
-    "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
-  },
+  "system.cpu": [

[Yoyo Zhou, 2014/08/13 20:24:09]

I think it should be possible to make this less redundant, but no need to do
that now.

+    {
+      "channel": "stable",
+      "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["hosted_app"],
+      "whitelist": ["B44D08FD98F1523ED5837D78D0A606EA9D6206E5"]  // Web Store
+    }
+  ],
+  "system.memory": [
+    {
+      "channel": "stable",
+      "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["hosted_app"],
+      "whitelist": ["B44D08FD98F1523ED5837D78D0A606EA9D6206E5"]  // Web Store
+    }
+  ],
+  "system.network": [
+    {
+      "channel": "stable",
+      "extension_types": ["platform_app"]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["hosted_app"],
+      "whitelist": ["B44D08FD98F1523ED5837D78D0A606EA9D6206E5"]  // Web Store
+    }
+  ],
+  "system.storage": [
+    {
+      "channel": "stable",
+      "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["hosted_app"],
+      "whitelist": ["B44D08FD98F1523ED5837D78D0A606EA9D6206E5"]  // Web Store
+    }
+  ],
+  "system.display": [
+    {
+      "channel": "stable",
+      "extension_types": ["extension", "legacy_packaged_app", "platform_app"]
+    },
+    {
+      "channel": "stable",
+      "extension_types": ["hosted_app"],
+      "whitelist": ["B44D08FD98F1523ED5837D78D0A606EA9D6206E5"]  // Web Store
+    }
+  ],
   "systemPrivate": {
     "channel": "stable",
     "extension_types": ["extension", "legacy_packaged_app", "platform_app"],
     "location": "component"
   },
   "tabs": [
     {
       "channel": "stable",
       "extension_types": ["extension", "legacy_packaged_app"]
     },
@@ skipping 128 matching lines @@
     // Only allowed for whitelisted extensions until all the caveats are
     // addressed. Tracked in crbug/285151.
     "channel": "stable",
     "extension_types": ["extension"],
     "location": "component",
     "whitelist": [
       "D519188F86D9ACCEE0412007B227D9936EB9676B"  // GAIA Component Extension
     ]
   }]
 }