Debugger: Remove widget argument from tooltip request

The only information ever used is whether it's c++ or not.

Change-Id: I4ca00663856dd66cbdf58c468f175a8c9e41d6a5
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/debugger/qml/qmlengine.h

@@ -89,8 +89,7 @@ public:
     void insertBreakpoint(Breakpoint bp);
 
 signals:
-    void tooltipRequested(const QPoint &mousePos,
-        TextEditor::TextEditorWidget *editorWidget, int cursorPos);
+    void tooltipRequested(const DebuggerToolTipContext &context);
 
 private slots:
     void disconnected();
@@ -128,8 +127,7 @@ private:
     void shutdownInferior();
     void shutdownEngine();
 
-    bool setToolTipExpression(TextEditor::TextEditorWidget *editorWidget,
-        const DebuggerToolTipContext &);
+    bool setToolTipExpression(const DebuggerToolTipContext &);
 
     void continueInferior();
     void interruptInferior();