DevTools: [JSDocValidator] Fix function qualified name detection

Source/devtools/scripts/jsdoc-validator/tests/golden.dat

 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/function.js:1: ERROR - @return annotation is required for API functions that return value
 function badFuncNoAnnotation() {
          ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/function.js:8: ERROR - @return annotation found, yet function does not return value
 function badFuncAnnotatedButNoReturn() // ERROR - no @return annotation.
          ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/function.js:15: ERROR - @return annotation found, yet function does not return value
 function badFuncAnnotatedButNoReturnValue() // ERROR - no returned value.
@@ skipping 184 matching lines @@
 ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/proto.js:121: ERROR - No __proto__ assigned for type BadSetSubclass having @extends
  * @extends {Set.<T>}
              ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/proto.js:124: ERROR - Type BadSetSubclass extends Set but does not properly invoke its constructor
 var BadSetSubclass = function()
     ^
 
+/usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/proto.js:135: ERROR - No __proto__ assigned for type NS.BadSubClass having @extends
+ * @extends {Base}
+             ^
+
+/usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/proto.js:137: ERROR - Type NS.BadSubClass extends Base but does not properly invoke its constructor
+NS.BadSubClass = function() {}
+^
+
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/this.js:19: ERROR - @this annotation is required for functions referencing 'this'
         function badInnerCallback() {
                  ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/this.js:24: ERROR - @this annotation is required for functions referencing 'this'
     function badCallbackInCtor() {
              ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/this.js:54: ERROR - @this annotation is required for functions referencing 'this'
         function badCallbackInMethod() {
@@ skipping 108 matching lines @@
                                           ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/this.js:268: ERROR - @this annotation is required for functions referencing 'this'
         function callbackReferencingThisNotAnnotated()
                  ^
 
 /usr/local/google/home/apavlov/dev/blink/src/third_party/WebKit/Source/devtools/scripts/jsdoc-validator/tests/this.js:277: ERROR - @this annotation found for function not referencing 'this'
         function callbackNotReferencingThisAnnotated()
                  ^
 
-Total errors: 83
+Total errors: 85