Update from https://crrev.com/309415

sky/engine/platform/graphics/UnacceleratedImageBufferSurface.cpp

Index: sky/engine/platform/graphics/UnacceleratedImageBufferSurface.cpp
diff --git a/sky/engine/platform/graphics/UnacceleratedImageBufferSurface.cpp b/sky/engine/platform/graphics/UnacceleratedImageBufferSurface.cpp
index e1a5784d9ac131b743971ab7cd51b67650cfe776..6db871fe0283ec76f4b1c5bc463c6ff88bb4f933 100644
--- a/sky/engine/platform/graphics/UnacceleratedImageBufferSurface.cpp
+++ b/sky/engine/platform/graphics/UnacceleratedImageBufferSurface.cpp
@@ -38,8 +38,11 @@ namespace blink {
 
 UnacceleratedImageBufferSurface::UnacceleratedImageBufferSurface(const IntSize& size, OpacityMode opacityMode)
     : ImageBufferSurface(size, opacityMode)
-    , m_surface(adoptRef(SkSurface::NewRasterPMColor(size.width(), size.height())))
 {
+    SkAlphaType alphaType = (Opaque == opacityMode) ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
+    SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(), alphaType);
+    SkSurfaceProps disableLCDProps(0, kUnknown_SkPixelGeometry);
+    m_surface = adoptRef(SkSurface::NewRaster(info, Opaque == opacityMode ? 0 : &disableLCDProps));
     if (m_surface)
         clear();
 }