bug(router1): Build artifact is missing facade function

[brandonroberts]

After building the angular_1_router.js from source, there is an error when attempting to use the router.

TypeError: StringWrapper.charCodeAt is not a function
    at compareSpecificityStrings (http://localhost:8080/dependencies.js:2370:32)
    at http://localhost:8080/dependencies.js:2356:13
    at Array.reduce (native)
    at mostSpecific (http://localhost:8080/dependencies.js:2355:17)
    at processQueue (https://code.angularjs.org/snapshot/angular.js:15622:28)
    at https://code.angularjs.org/snapshot/angular.js:15638:27
    at Scope.$eval (https://code.angularjs.org/snapshot/angular.js:16888:28)
    at Scope.$digest (https://code.angularjs.org/snapshot/angular.js:16706:31)
    at Scope.$apply (https://code.angularjs.org/snapshot/angular.js:16996:24)
    at bootstrapApply (https://code.angularjs.org/snapshot/angular.js:1690:15)

See console log for error. http://plnkr.co/edit/PZUUgYat0UGnCo3XQ0d5?p=preview

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