SkPdf: smaller color serialization

src/pdf/SkPDFDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPDFDevice.h"
 
 #include "SkAnnotationKeys.h"
@@ skipping 33 matching lines @@
 // kSrcOver_Mode.  http://crbug.com/473572
 static void replace_srcmode_on_opaque_paint(SkPaint* paint) {
     if (kSrcOver_SkXfermodeInterpretation
         == SkInterpretXfermode(*paint, false)) {
         paint->setXfermode(nullptr);
     }
 }
 
 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(" ");
 }
 
 static SkPaint calculate_text_paint(const SkPaint& paint) {
     SkPaint result = paint;
     if (result.isFakeBoldText()) {
         SkScalar fakeBoldScale = SkScalarInterpFunc(result.getTextSize(),
                                                     kStdFakeBoldInterpKeys,
                                                     kStdFakeBoldInterpValues,
                                                     kStdFakeBoldInterpLength);
@@ skipping 2051 matching lines @@
         if (!pdfimage) {
             return;
         }
         fDocument->serialize(pdfimage);  // serialize images early.
         fDocument->canon()->addPDFBitmap(key, pdfimage);
     }
     // TODO(halcanary): addXObjectResource() should take a sk_sp<SkPDFObject>
     SkPDFUtils::DrawFormXObject(this->addXObjectResource(pdfimage.get()),
                                 &content.entry()->fContent);
 }