separate state for msaa renderability

src/gpu/GrClipMaskManager.cpp

Index: src/gpu/GrClipMaskManager.cpp
diff --git a/src/gpu/GrClipMaskManager.cpp b/src/gpu/GrClipMaskManager.cpp
index 3709acfc6a2b52c5e0a4c0fcdb6ff12db30336ae..bfca12f096e5b3302da73ecae253b2aeeb615512 100644
--- a/src/gpu/GrClipMaskManager.cpp
+++ b/src/gpu/GrClipMaskManager.cpp
@@ -406,7 +406,7 @@ bool GrClipMaskManager::getMaskTexture(int32_t clipStackGenID,
         desc.fWidth = clipSpaceIBounds.width();
         desc.fHeight = clipSpaceIBounds.height();
         desc.fConfig = kRGBA_8888_GrPixelConfig;
-        if (this->getContext()->isConfigRenderable(kAlpha_8_GrPixelConfig)) {
+        if (this->getContext()->isConfigRenderable(kAlpha_8_GrPixelConfig, false)) {
             // We would always like A8 but it isn't supported on all platforms
             desc.fConfig = kAlpha_8_GrPixelConfig;
         }