Bug 1343996: Forbid empty types and urls request filter arrays. r=rpl

MozReview-Commit-ID: IsMwRYVo9t9

--HG--
extra : rebase_source : 53f9ca3b962638fc15259bee2cdf4c968880c3b6

toolkit/components/extensions/schemas/web_request.json

@@ -102,13 +102,15 @@
           "urls": {
             "type": "array",
             "description": "A list of URLs or URL patterns. Requests that cannot match any of the URLs will be filtered out.",
-            "items": { "type": "string" }
+            "items": { "type": "string" },
+            "minItems": 1
           },
           "types": {
             "type": "array",
             "optional": true,
             "description": "A list of request types. Requests that cannot match any of the types will be filtered out.",
-            "items": { "$ref": "ResourceType" }
+            "items": { "$ref": "ResourceType" },
+            "minItems": 1
           },
           "tabId": { "type": "integer", "optional": true },
           "windowId": { "type": "integer", "optional": true }