GPU implementation of drawRegion()

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index a6c8a1fc74fceb34ff86038324c78d25368c2fa0..4372d629152ccf30bb6629eb009d32b4ed61c40f 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -526,6 +526,21 @@ void SkGpuDevice::drawDRRect(const SkDraw& draw, const SkRRect& outer,
 
 /////////////////////////////////////////////////////////////////////////////
 
+void SkGpuDevice::drawRegion(const SkDraw& draw, const SkRegion& region, const SkPaint& paint) {
+    if (paint.getMaskFilter()) {
+        SkPath path;
+        region.getBoundaryPath(&path);
+        return this->drawPath(draw, path, paint, nullptr, false);
+    }
+
+    GrPaint grPaint;
+    if (!SkPaintToGrPaint(this->context(), fDrawContext.get(), paint, *draw.fMatrix, &grPaint)) {
+        return;
+    }
+
+    fDrawContext->drawRegion(fClip, grPaint, *draw.fMatrix, region, GrStyle(paint));
+}
+
 void SkGpuDevice::drawOval(const SkDraw& draw, const SkRect& oval, const SkPaint& paint) {
     ASSERT_SINGLE_OWNER
     GR_CREATE_TRACE_MARKER_CONTEXT("SkGpuDevice", "drawOval", fContext);