Fixed bug #14266: fix observation of NSView size change
Fixed bug #14266: fix observation of NSView size change

Previously, we started observing for NSView size changes *before*
we actually create the NSView. i.e. we observe nothing.
Now we start observing after the NSView is created.

Change-Id: I3eb86e9982caae464fffe1c8cfc19035a194ec27

sankhesh/VTK,msmolens/VTK,msmolens/VTK,mspark93/VTK,msmolens/VTK,sankhesh/VTK,ashray/VTK-EVM,keithroe/vtkoptix,jmerkow/VTK,SimVascular/VTK,SimVascular/VTK,sankhesh/VTK,ashray/VTK-EVM,johnkit/vtk-dev,keithroe/vtkoptix,demarle/VTK,keithroe/vtkoptix,hendradarwin/VTK,sumedhasingla/VTK,ashray/VTK-EVM,hendradarwin/VTK,sumedhasingla/VTK,sankhesh/VTK,gram526/VTK,johnkit/vtk-dev,demarle/VTK,keithroe/vtkoptix,mspark93/VTK,candy7393/VTK,jmerkow/VTK,gram526/VTK,mspark93/VTK,mspark93/VTK,keithroe/vtkoptix,jmerkow/VTK,ashray/VTK-EVM,gram526/VTK,gram526/VTK,jmerkow/VTK,msmolens/VTK,sankhesh/VTK,SimVascular/VTK,candy7393/VTK,gram526/VTK,candy7393/VTK,demarle/VTK,sumedhasingla/VTK,mspark93/VTK,mspark93/VTK,sankhesh/VTK,sumedhasingla/VTK,keithroe/vtkoptix,demarle/VTK,ashray/VTK-EVM,hendradarwin/VTK,johnkit/vtk-dev,gram526/VTK,msmolens/VTK,demarle/VTK,SimVascular/VTK,candy7393/VTK,msmolens/VTK,keithroe/vtkoptix,sumedhasingla/VTK,candy7393/VTK,johnkit/vtk-dev,sumedhasingla/VTK,sankhesh/VTK,jmerkow/VTK,johnkit/vtk-dev,jmerkow/VTK,keithroe/vtkoptix,ashray/VTK-EVM,mspark93/VTK,SimVascular/VTK,johnkit/vtk-dev,gram526/VTK,johnkit/vtk-dev,hendradarwin/VTK,hendradarwin/VTK,hendradarwin/VTK,sumedhasingla/VTK,candy7393/VTK,SimVascular/VTK,sumedhasingla/VTK,gram526/VTK,SimVascular/VTK,demarle/VTK,jmerkow/VTK,candy7393/VTK,ashray/VTK-EVM,demarle/VTK,demarle/VTK,jmerkow/VTK,ashray/VTK-EVM,msmolens/VTK,hendradarwin/VTK,SimVascular/VTK,msmolens/VTK,candy7393/VTK,sankhesh/VTK,mspark93/VTK