Move feConvolveMatrix error handling to FEConvolveMatrix

third_party/WebKit/Source/platform/graphics/filters/FilterEffect.cpp

Index: third_party/WebKit/Source/platform/graphics/filters/FilterEffect.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/filters/FilterEffect.cpp b/third_party/WebKit/Source/platform/graphics/filters/FilterEffect.cpp
index 16977f23ce9c51807e0416f828fe081996135a08..7e8987bff31f2127e214b4a4c52e805c1ddcc8b4 100644
--- a/third_party/WebKit/Source/platform/graphics/filters/FilterEffect.cpp
+++ b/third_party/WebKit/Source/platform/graphics/filters/FilterEffect.cpp
@@ -22,10 +22,10 @@
  */
 
 #include "config.h"
-
 #include "platform/graphics/filters/FilterEffect.h"
 
 #include "platform/graphics/filters/Filter.h"
+#include "third_party/skia/include/effects/SkPictureImageFilter.h"
 
 namespace blink {
 
@@ -190,6 +190,11 @@ PassRefPtr<SkImageFilter> FilterEffect::createImageFilterWithoutValidation(SkiaI
     return createImageFilter(builder);
 }
 
+PassRefPtr<SkImageFilter> FilterEffect::createTransparentBlack() const
+{
+    return adoptRef(SkPictureImageFilter::Create(nullptr, filterPrimitiveSubregion()));
+}
+
 bool FilterEffect::hasConnectedInput() const
 {
     for (unsigned i = 0; i < m_inputEffects.size(); i++) {