Creating framework for drawShadowedPicture

tools/debugger/SkDebugCanvas.cpp

Index: tools/debugger/SkDebugCanvas.cpp
diff --git a/tools/debugger/SkDebugCanvas.cpp b/tools/debugger/SkDebugCanvas.cpp
index ae934a16e74267759090f83082df9921371b1bf0..a6d8028769b70a7a6c975c2226e0710a68c26640 100644
--- a/tools/debugger/SkDebugCanvas.cpp
+++ b/tools/debugger/SkDebugCanvas.cpp
@@ -58,6 +58,11 @@ protected:
         this->SkCanvas::onDrawPicture(picture, matrix, paint);
     }
 
+    void onDrawShadowedPicture(const SkPicture* picture,
+                               const sk_sp<SkLights> lights) override {
+        this->SkCanvas::onDrawShadowedPicture(picture, lights);
+    }
+
 private:
     sk_sp<SkXfermode> fOverdrawXfermode;
 
@@ -603,6 +608,14 @@ void SkDebugCanvas::onDrawPicture(const SkPicture* picture,
     this->addDrawCommand(new SkEndDrawPictureCommand(SkToBool(matrix) || SkToBool(paint)));
 }
 
+void SkDebugCanvas::onDrawShadowedPicture(const SkPicture* picture,
+                                  const sk_sp<SkLights> lights) {
+    this->addDrawCommand(new SkBeginDrawShadowedPictureCommand(picture, lights));
+    SkAutoCanvasMatrixPaint acmp(this, nullptr, nullptr, picture->cullRect());
+    picture->playback(this);
+    this->addDrawCommand(new SkEndDrawShadowedPictureCommand(SkToBool(lights)));
+}
+
 void SkDebugCanvas::onDrawPoints(PointMode mode, size_t count,
                                  const SkPoint pts[], const SkPaint& paint) {
     this->addDrawCommand(new SkDrawPointsCommand(mode, count, pts, paint));