SkPdf: smaller color serialization

src/pdf/SkPDFDevice.cpp

Index: src/pdf/SkPDFDevice.cpp
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 8e417b1f529dbf9e4b41909175a9cf7107aeb940..340f3674af6466b1343fa0c909b8e06ec68bbb47 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -51,12 +51,11 @@ static void replace_srcmode_on_opaque_paint(SkPaint* paint) {
 
 static void emit_pdf_color(SkColor color, SkWStream* result) {
     SkASSERT(SkColorGetA(color) == 0xFF);  // We handle alpha elsewhere.
-    SkScalar colorScale = SkScalarInvert(0xFF);
-    SkPDFUtils::AppendScalar(SkColorGetR(color) * colorScale, result);
+    SkPDFUtils::AppendColorComponent(SkColorGetR(color), result);
     result->writeText(" ");
-    SkPDFUtils::AppendScalar(SkColorGetG(color) * colorScale, result);
+    SkPDFUtils::AppendColorComponent(SkColorGetG(color), result);
     result->writeText(" ");
-    SkPDFUtils::AppendScalar(SkColorGetB(color) * colorScale, result);
+    SkPDFUtils::AppendColorComponent(SkColorGetB(color), result);
     result->writeText(" ");
 }