Drop pattern-related state from GraphicsContext(State)

Source/platform/graphics/GeneratedImage.cpp

Index: Source/platform/graphics/GeneratedImage.cpp
diff --git a/Source/platform/graphics/GeneratedImage.cpp b/Source/platform/graphics/GeneratedImage.cpp
index 27b889be0348027bd0a13250f007cafbc98c4868..76622c43d5f3a1b656e4feeed445ab9c9cdc1154 100644
--- a/Source/platform/graphics/GeneratedImage.cpp
+++ b/Source/platform/graphics/GeneratedImage.cpp
@@ -65,9 +65,12 @@ void GeneratedImage::drawPattern(GraphicsContext* destContext, const FloatRect&
     RefPtr<Pattern> picturePattern = Pattern::createPicturePattern(tilePicture);
     picturePattern->setPatternSpaceTransform(patternTransform);
 
-    GraphicsContextStateSaver saver(*destContext);
-    destContext->setFillPattern(picturePattern);
-    destContext->fillRect(destRect, destContext->fillColor(), compositeOp);
+    SkPaint fillPaint = destContext->fillPaint();
+    fillPaint.setShader(picturePattern->shader());
+    fillPaint.setColor(SK_ColorBLACK);
+    fillPaint.setXfermodeMode(compositeOp);
+
+    destContext->drawRect(destRect, fillPaint);
 }
 
 } // namespace blink