[inspector] Refactor protocol-test.js

test/inspector/runtime/console-spec-expected.txt

+Tests console object and it's prototype
 
 Running test: consoleExistsOnGlobal
 true
 
 Running test: consoleHasRightPropertyDescriptor
 {
     configurable : true
     enumerable : false
     value : <value>
     writable : true
 }
 
 Running test: ConsoleNotExistsOnGlobal
 false
 
 Running test: prototypeChainMustBeCorrect
 true
 
 Running test: consoleToString
 [object Object]
 
 Running test: consoleMethodPropertyDescriptor
 {
     configurable : true
     enumerable : true
     value : {
     }
     writable : true
 }