Merge "Skip updateCursorAnchorInfo when matrix is null" into qt-qpr1-dev

                        if (mBindSequence != bindSequence) {

                            return;

                        }

                        if (matrixValues == null) {

                            // That this app is unbound from the parent ActivityView. In this case,

                        if (matrixValues == null || mActivityViewToScreenMatrix == null) {

                            // Either InputBoundResult#mActivityViewToScreenMatrixValues is null

                            // OR this app is unbound from the parent ActivityView. In this case,

                            // calling updateCursorAnchorInfo() isn't safe. Only clear the matrix.

                            mActivityViewToScreenMatrix = null;

                            return;