Bug 1223434 - Fix Fennec's Java selection handles to work with the C++ APZ. r=kats

--HG--
extra : commitid : CbeuaLWQT1j

mobile/android/base/gfx/GeckoLayerClient.java

@@ -930,7 +930,7 @@ class GeckoLayerClient implements LayerView.Listener, PanZoomTarget
         ImmutableViewportMetrics viewportMetrics = mViewportMetrics;
         PointF origin = viewportMetrics.getOrigin();
         float zoom = viewportMetrics.zoomFactor;
-        ImmutableViewportMetrics geckoViewport = mGeckoViewport;
+        ImmutableViewportMetrics geckoViewport = (AppConstants.MOZ_ANDROID_APZ ? mViewportMetrics : mGeckoViewport);
         PointF geckoOrigin = geckoViewport.getOrigin();
         float geckoZoom = geckoViewport.zoomFactor;