QmlJSDebugger: Remove reference to JSDebugger in QDeclarativeViewObserver

Make Observer and JSDebugger orthogonal.

share/qtcreator/qml/qmlobserver/qmlruntime.cpp

@@ -619,6 +619,7 @@ QDeclarativeViewer::QDeclarativeViewer(QWidget *parent, Qt::WindowFlags flags)
 
     canvas = new QDeclarativeView(this);
     observer = new QmlJSDebugger::QDeclarativeViewObserver(canvas, this);
+    new QmlJSDebugger::JSDebuggerAgent(canvas->engine());
     if (!(flags & Qt::FramelessWindowHint)) {
         m_crumblePathWidget = new CrumblePath(canvas);
 #ifndef Q_WS_MAC
@@ -699,11 +700,6 @@ void QDeclarativeViewer::setDesignModeBehavior(bool value)
     observer->setDesignModeBehavior(value);
 }
 
-void QDeclarativeViewer::setDebugMode(bool on)
-{
-    observer->setDebugMode(on);
-}
-
 void QDeclarativeViewer::enableExperimentalGestures()
 {
     canvas->viewport()->grabGesture(Qt::TapGesture,Qt::DontStartGestureOnChildren|Qt::ReceivePartialGestures|Qt::IgnoredGesturesPropagateToParent);