Revert of Revert of Revert of Change device creation to see the (optional) layer-paint

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 757dfbf521e7d6f083e03de119d15d6148eeddae..fb5fa7cc7a5f25004fbed7c69815a16ab300edff 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1862,7 +1862,7 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkBaseDevice* SkGpuDevice::onCreateDevice(const CreateInfo& cinfo, const SkPaint*) {
+SkBaseDevice* SkGpuDevice::onCreateCompatibleDevice(const CreateInfo& cinfo) {
     GrSurfaceDesc desc;
     desc.fConfig = fRenderTarget->config();
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
@@ -1876,7 +1876,7 @@
 
     // layers are never draw in repeat modes, so we can request an approx
     // match and ignore any padding.
-    const GrContext::ScratchTexMatch match = (kNever_TileUsage == cinfo.fTileUsage) ?
+    const GrContext::ScratchTexMatch match = (kSaveLayer_Usage == cinfo.fUsage) ?
                                                 GrContext::kApprox_ScratchTexMatch :
                                                 GrContext::kExact_ScratchTexMatch;
     texture.reset(fContext->refScratchTexture(desc, match));