Forward fill and stroke styles from 2d canvas to canvas filters

third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h

Index: third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h
diff --git a/third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h b/third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h
new file mode 100644
index 0000000000000000000000000000000000000000..a1f556a6e9189fea586716f57df4c111bd6df275
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h
@@ -0,0 +1,35 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PaintFilterEffect_h
+#define PaintFilterEffect_h
+
+#include "platform/graphics/filters/FilterEffect.h"
+
+class SkShader;
+
+namespace blink {
+
+class PLATFORM_EXPORT PaintFilterEffect : public FilterEffect {
+public:
+    static PassRefPtrWillBeRawPtr<PaintFilterEffect> create(Filter*, PassRefPtr<SkShader>);
+    ~PaintFilterEffect() override;
+
+    FilterEffectType filterEffectType() const override { return FilterEffectTypeSourceInput; }
+
+    static const AtomicString& fillEffectName();

[fs, 2015/12/21 19:34:20]

I think these could just be local to the SVGFilterBuilder - and the same
treatment given to SourceGraphic::effectName and SourceAlpha::effectName rather.
Maybe a local "FilterInputKeywords" with some methods or something.

[ajuma, 2016/01/11 19:14:08]

Done.

+    static const AtomicString& strokeEffectName();
+
+    TextStream& externalRepresentation(TextStream&, int indention) const override;
+    PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder&) override;
+
+private:
+    PaintFilterEffect(Filter*, PassRefPtr<SkShader>);
+
+    RefPtr<SkShader> m_shader;
+};
+
+} // namespace blink
+
+#endif // PaintFilterEffect_h