[inspector] Refactor protocol-test.js

test/inspector/runtime/clear-of-command-line-api-expected.txt

 Tests that CommandLineAPI is presented only while evaluation.
 
 {
     id : <messageId>
     result : {
         result : {
             description : 15
             type : number
             value : 15
         }
@@ skipping 156 matching lines @@
 }
 {
     id : <messageId>
     result : {
         result : {
             description : 42
             type : number
             value : 42
         }
     }
-}
+}