Use strict DI for $delegate and $browser

[Chris380]

Without this change I ran into a error testing an app with strict DI activated: Error: [$injector:strictdi] function($delegate) is not using explicit annotation and can not be invoked in strict mode http://errors.angularjs.org/1.4.6/$injector/strictdi?p0=function(%24delegate)

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[vkarpov15]

2 things prevent me from merging this.

1. Googlebot.
2. angular-scenario is just copy/pasted compiled code here, and if/when we ever upgrade to newer versions of ng-scenario this change will have to go along with it, so I'd imagine the right place to put this PR would be in https://github.com/angular/angular.js/tree/master/src/ngScenario

[davidparsson]

One alternative to this might be to use something like ng-annotate to transform the library at build time, to be able to enable strict DI.