hg: jdk/sandbox: Initial state management for Mask Cache with some cleanup

[jayathirth.d.v at oracle.com]

Changeset: 64365a5764cd
Author:    jdv
Date:      2019-07-19 15:11 +0530
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/64365a5764cd

Initial state management for Mask Cache with some cleanup

! src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLRenderQueue.h
! src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLRenderQueue.m
! src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLTextRenderer.m
! src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLVertexCache.h
! src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLVertexCache.m