Implemented transparent gradients

src/pdf/SkPDFUtils.cpp

Index: src/pdf/SkPDFUtils.cpp
diff --git a/src/pdf/SkPDFUtils.cpp b/src/pdf/SkPDFUtils.cpp
index 16abc2f9f252b381a26a4d8c016361018d71c712..5f07c8ce4d7a8b8ed040588b0d5b277a7cf1ba5a 100644
--- a/src/pdf/SkPDFUtils.cpp
+++ b/src/pdf/SkPDFUtils.cpp
@@ -17,6 +17,17 @@
 #include "SkString.h"
 #include "SkPDFTypes.h"
 
+//static
+SkPDFArray* SkPDFUtils::RectToArray(const SkRect& rect) {
+    SkPDFArray* result = new SkPDFArray();
+    result->reserve(4);
+    result->appendScalar(rect.fLeft);
+    result->appendScalar(rect.fTop);
+    result->appendScalar(rect.fRight);
+    result->appendScalar(rect.fBottom);
+    return result;
+}
+
 // static
 SkPDFArray* SkPDFUtils::MatrixToArray(const SkMatrix& matrix) {
     SkScalar values[6];