Implemented transparent gradients

src/pdf/SkPDFUtils.h

Index: src/pdf/SkPDFUtils.h
diff --git a/src/pdf/SkPDFUtils.h b/src/pdf/SkPDFUtils.h
index 1bdbf785cc7ec70d9b6b47d1e376807db9009514..4f54db6688b81a3c1baa14018f7cb526ba59aed7 100644
--- a/src/pdf/SkPDFUtils.h
+++ b/src/pdf/SkPDFUtils.h
@@ -35,6 +35,7 @@ class SkWStream;
 
 class SkPDFUtils {
 public:
+    static SkPDFArray* RectToArray(const SkRect& rect);
     static SkPDFArray* MatrixToArray(const SkMatrix& matrix);
     static void AppendTransform(const SkMatrix& matrix, SkWStream* content);
 
@@ -52,6 +53,7 @@ public:
     static void StrokePath(SkWStream* content);
     static void DrawFormXObject(int objectIndex, SkWStream* content);
     static void ApplyGraphicState(int objectIndex, SkWStream* content);
+    static void ApplyPattern(int objectIndex, SkWStream* content);
 };
 
 #endif