Add makeSpecial calls to SkGpuDevice

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index 5c92703f31815c0f0e270f0f185154611a39bb9c..7ecdbef0957f96189483bb65b5f2ed37d2e2e8de 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -23,6 +23,21 @@
 #include "SkTextBlobRunIterator.h"
 #include "SkTextToPathIter.h"
 
+void SkBaseDevice::drawSpecial(const SkDraw&, SkSpecialImage*, int x, int y, const SkPaint&) {
+}
+
+sk_sp<SkSpecialImage> SkBaseDevice::makeSpecial(const SkBitmap&) {
+    return nullptr;
+}
+
+sk_sp<SkSpecialImage> SkBaseDevice::makeSpecial(SkImage*) {
+    return nullptr;
+}
+
+sk_sp<SkSpecialImage> SkBaseDevice::snapSpecial() {
+    return nullptr;
+}
+
 SkBaseDevice::SkBaseDevice(const SkSurfaceProps& surfaceProps)
     : fSurfaceProps(surfaceProps)
 #ifdef SK_DEBUG