Disable layer hoisting for non-8888 canvases

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 98da472581bbba469d47668b346e1a47038bac07..ba5848b4b11996b40e3fe974f27802b76b85bc81 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1782,7 +1782,9 @@ bool SkGpuDevice::EXPERIMENTAL_drawPicture(SkCanvas* mainCanvas, const SkPicture
     ASSERT_SINGLE_OWNER
 #ifndef SK_IGNORE_GPU_LAYER_HOISTING
     // todo: should handle this natively
-    if (paint) {
+    if (paint ||
+        (kRGBA_8888_SkColorType != mainCanvas->imageInfo().colorType() &&
+         kBGRA_8888_SkColorType != mainCanvas->imageInfo().colorType())) {
         return false;
     }