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

third_party/WebKit/Source/modules/canvas2d/CanvasStyle.cpp

Index: third_party/WebKit/Source/modules/canvas2d/CanvasStyle.cpp
diff --git a/third_party/WebKit/Source/modules/canvas2d/CanvasStyle.cpp b/third_party/WebKit/Source/modules/canvas2d/CanvasStyle.cpp
index a1c55bfcfdfb15eac0f1095fde32741f78ae4832..ad05efc88b1f64bb53af89cad5ad61b18a103d78 100644
--- a/third_party/WebKit/Source/modules/canvas2d/CanvasStyle.cpp
+++ b/third_party/WebKit/Source/modules/canvas2d/CanvasStyle.cpp
@@ -135,6 +135,27 @@ RGBA32 CanvasStyle::paintColor() const
     return Color::black;
 }
 
+PassRefPtr<SkShader> CanvasStyle::asShader() const
+{
+    switch (m_type) {
+    case ColorRGBA:
+        return adoptRef(SkShader::CreateColorShader(m_rgba));
+    case Gradient: {
+        SkPaint paint;
+        canvasGradient()->gradient()->applyToPaint(paint);
+        return paint.getShader();
+    }
+    case ImagePattern: {
+        SkPaint paint;
+        canvasPattern()->pattern()->applyToPaint(paint);
+        return paint.getShader();
+    }
+    default:
+        ASSERT_NOT_REACHED();
+    }
+    return nullptr;
+}
+
 DEFINE_TRACE(CanvasStyle)
 {
     visitor->trace(m_gradient);