[inspector] added length for scriptParsed notification

test/inspector/debugger/es6-module-script-parsed-expected.txt

Index: test/inspector/debugger/es6-module-script-parsed-expected.txt
diff --git a/test/inspector/debugger/es6-module-script-parsed-expected.txt b/test/inspector/debugger/es6-module-script-parsed-expected.txt
index 26b35c5b2687e7e85fcb05e93d9769b7abfddedb..7639ab653774e910bf633a861840aa2c0b865f33 100644
--- a/test/inspector/debugger/es6-module-script-parsed-expected.txt
+++ b/test/inspector/debugger/es6-module-script-parsed-expected.txt
@@ -11,6 +11,7 @@ Running test: testLoadedModulesOnDebuggerEnable
         hash : F8E59942466284E2766FD161CA6FFD024048A807
         isLiveEdit : false
         isModule : true
+        length : 39
         scriptId : <scriptId>
         sourceMapURL : 
         startColumn : 0
@@ -30,6 +31,7 @@ Running test: testScriptEventsWhenDebuggerIsEnabled
         hash : F8E59942466284E2766FD161CA6FFD024048A807
         isLiveEdit : false
         isModule : true
+        length : 39
         scriptId : <scriptId>
         sourceMapURL : 
         startColumn : 0
@@ -46,6 +48,7 @@ Running test: testScriptEventsWhenDebuggerIsEnabled
         hasSourceURL : false
         hash : FF746120E4E4F1BA4CB5762843D429DC872EBA18
         isModule : true
+        length : 1
         scriptId : <scriptId>
         sourceMapURL : 
         startColumn : 0