QmlProfiler: show warning when no observer is present
QmlProfiler: show warning when no observer is present

Task-number: QTCREATORBUG-5536
Change-Id: I2cd1e62f78af3b1b18a3e318ad29ee0343c48b29
Reviewed-on: http://codereview.qt.nokia.com/1930
Reviewed-by: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: Kai Koehne <077bc265216106fb22408e62f2d97925ede69d10@nokia.com>

Distrotech/qtcreator,xianian/qt-creator,KDE/android-qt-creator,malikcjm/qtcreator,duythanhphan/qt-creator,xianian/qt-creator,dmik/qt-creator-os2,colede/qtcreator,ostash/qt-creator-i18n-uk,kuba1/qtcreator,omniacreator/qtcreator,hdweiss/qt-creator-visualizer,amyvmiwei/qt-creator,dmik/qt-creator-os2,syntheticpp/qt-creator,ostash/qt-creator-i18n-uk,darksylinc/qt-creator,AltarBeastiful/qt-creator,omniacreator/qtcreator,Distrotech/qtcreator,jonnor/qt-creator,bakaiadam/collaborative_qt_creator,amyvmiwei/qt-creator,danimo/qt-creator,ostash/qt-creator-i18n-uk,richardmg/qtcreator,malikcjm/qtcreator,duythanhphan/qt-creator,azat/qtcreator,KDAB/KDAB-Creator,ostash/qt-creator-i18n-uk,xianian/qt-creator,danimo/qt-creator,jonnor/qt-creator,duythanhphan/qt-creator,kuba1/qtcreator,richardmg/qtcreator,azat/qtcreator,xianian/qt-creator,KDAB/KDAB-Creator,kuba1/qtcreator,xianian/qt-creator,KDE/android-qt-creator,darksylinc/qt-creator,syntheticpp/qt-creator,Distrotech/qtcreator,KDAB/KDAB-Creator,farseerri/git_code,martyone/sailfish-qtcreator,richardmg/qtcreator,KDE/android-qt-creator,amyvmiwei/qt-creator,azat/qtcreator,richardmg/qtcreator,xianian/qt-creator,omniacreator/qtcreator,colede/qtcreator,KDE/android-qt-creator,syntheticpp/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,colede/qtcreator,martyone/sailfish-qtcreator,farseerri/git_code,jonnor/qt-creator,omniacreator/qtcreator,farseerri/git_code,darksylinc/qt-creator,duythanhphan/qt-creator,azat/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,farseerri/git_code,xianian/qt-creator,xianian/qt-creator,farseerri/git_code,amyvmiwei/qt-creator,farseerri/git_code,Distrotech/qtcreator,maui-packages/qt-creator,richardmg/qtcreator,KDAB/KDAB-Creator,KDE/android-qt-creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,farseerri/git_code,KDAB/KDAB-Creator,jonnor/qt-creator,dmik/qt-creator-os2,jonnor/qt-creator,bakaiadam/collaborative_qt_creator,azat/qtcreator,KDE/android-qt-creator,bakaiadam/collaborative_qt_creator,syntheticpp/qt-creator,dmik/qt-creator-os2,duythanhphan/qt-creator,darksylinc/qt-creator,syntheticpp/qt-creator,darksylinc/qt-creator,amyvmiwei/qt-creator,darksylinc/qt-creator,martyone/sailfish-qtcreator,bakaiadam/collaborative_qt_creator,syntheticpp/qt-creator,jonnor/qt-creator,Distrotech/qtcreator,omniacreator/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,AltarBeastiful/qt-creator,malikcjm/qtcreator,KDAB/KDAB-Creator,dmik/qt-creator-os2,malikcjm/qtcreator,maui-packages/qt-creator,KDE/android-qt-creator,colede/qtcreator,farseerri/git_code,AltarBeastiful/qt-creator,kuba1/qtcreator,maui-packages/qt-creator,dmik/qt-creator-os2,colede/qtcreator,danimo/qt-creator,azat/qtcreator,danimo/qt-creator,danimo/qt-creator,Distrotech/qtcreator,duythanhphan/qt-creator,bakaiadam/collaborative_qt_creator,bakaiadam/collaborative_qt_creator,hdweiss/qt-creator-visualizer,malikcjm/qtcreator,kuba1/qtcreator,dmik/qt-creator-os2,maui-packages/qt-creator,malikcjm/qtcreator,danimo/qt-creator,amyvmiwei/qt-creator,ostash/qt-creator-i18n-uk,kuba1/qtcreator,richardmg/qtcreator,darksylinc/qt-creator,duythanhphan/qt-creator,hdweiss/qt-creator-visualizer,martyone/sailfish-qtcreator,hdweiss/qt-creator-visualizer,ostash/qt-creator-i18n-uk,richardmg/qtcreator,kuba1/qtcreator,bakaiadam/collaborative_qt_creator,omniacreator/qtcreator,maui-packages/qt-creator,AltarBeastiful/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,syntheticpp/qt-creator,hdweiss/qt-creator-visualizer,hdweiss/qt-creator-visualizer,ostash/qt-creator-i18n-uk,martyone/sailfish-qtcreator,malikcjm/qtcreator,maui-packages/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,xianian/qt-creator,omniacreator/qtcreator,colede/qtcreator,amyvmiwei/qt-creator,colede/qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,KDE/android-qt-creator,danimo/qt-creator,darksylinc/qt-creator,AltarBeastiful/qt-creator