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Revision 57e4ed2b

Remove unnecessary imports of url_item and add a CSP header-parsing function

The parsing function isn't used yet; however, it will eventually be as a less
destructive alternative to handling headers as indivisible units.

background/policy_injector.js
16	16	* IMPORT gen_unique
17	17	* IMPORT gen_nonce
18	18	* IMPORT is_privileged_url
19		* IMPORT url_item
20	19	* IMPORT url_extract_target
21	20	* IMPORT sign_policy
22	21	* IMPORT get_query_best

         return gen_unique(time + policy);
+    }
     /* Parse a CSP header */
     function parse_csp(csp) {
         let directive, directive_array;
         let directives = {};
         for (directive of csp.split(';')) {
     	directive = directive.trim;
     	if (directive === '')
     	    continue;
     	directive_array = directive.split(/\s+/);
     	directive = directive_array.shift();
     	/* The "true" case should never occur; nevertheless... */
     	directives[directive] = directive in directives ?
     	    directives[directive].concat(directive_array) :
     	    directive_array;
+        }
         return directives;
+    }
     /*
      * EXPORTS_START
      * EXPORT gen_nonce
-...
      * EXPORT nice_name
      * EXPORT open_in_settings
      * EXPORT is_privileged_url
      * EXPORT parse_csp
      * EXPORTS_END
      */

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