lib,test: fixed lint issues

Added missing semicolons.

lib/NetworkAgent.js

@@ -20,7 +20,7 @@ NetworkAgent.prototype.loadResourceForFrontend = function(params, done) {
   }
 
   loadFileResource(params, done);
-}
+};
 
 function loadFileResource(params, done) {
   var match = params.url.match(/^file:\/\/(.*)$/);
@@ -61,6 +61,6 @@ function loadFileResource(params, done) {
 
 NetworkAgent.prototype.setUserAgentOverride = function(params, done) {
   done(null, {});
-}
+};
 
 exports.NetworkAgent = NetworkAgent;

test/NetworkAgent.js

@@ -17,5 +17,4 @@ describe('NetworkAgent', function() {
       );
     });
   });
-})
-
+});