CppTools: Separate highlighting for function declarations and calls

Task-number: QTCREATORBUG-15564
Change-Id: Iab1b60e19448202432f98295c89769cd376aa03f
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/plugins/cpptools/semantichighlighter.h

@@ -56,7 +56,9 @@ public:
         MacroUse,
         FunctionUse,
         PseudoKeywordUse,
-        StringUse
+        StringUse,
+        FunctionDeclarationUse,
+        VirtualFunctionDeclarationUse,
     };
 
     typedef std::function<QFuture<TextEditor::HighlightingResult> ()> HighlightingRunner;