QmlJSEditor: Signal that new semanticInfo is available

Will be used in QmlJSOutline.

src/plugins/qmljseditor/qmljseditor.cpp

@@ -1354,6 +1354,8 @@ void QmlJSTextEditor::updateSemanticInfo(const SemanticInfo &semanticInfo)
     appendExtraSelectionsForMessages(&selections, doc->diagnosticMessages(), document());
     appendExtraSelectionsForMessages(&selections, m_semanticInfo.semanticMessages, document());
     setExtraSelections(CodeWarningsSelection, selections);
+
+    emit semanticInfoUpdated(semanticInfo);
 }
 
 void QmlJSTextEditor::onCursorPositionChanged()

src/plugins/qmljseditor/qmljseditor.h

@@ -218,6 +218,9 @@ public slots:
     void followSymbolUnderCursor();
     virtual void setFontSettings(const TextEditor::FontSettings &);
 
+signals:
+    void semanticInfoUpdated(const QmlJSEditor::Internal::SemanticInfo &semanticInfo);
+
 private slots:
     void onDocumentUpdated(QmlJS::Document::Ptr doc);
     void modificationChanged(bool);