SkPdf: smaller color serialization

src/pdf/SkPDFTypes.h

 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPDFTypes_DEFINED
 #define SkPDFTypes_DEFINED
@@ skipping 72 matching lines @@
         SkPDFUnion objects. */
 
     static SkPDFUnion Int(int32_t);
 
     static SkPDFUnion Int(size_t v) { return SkPDFUnion::Int(SkToS32(v)); }
 
     static SkPDFUnion Bool(bool);
 
     static SkPDFUnion Scalar(SkScalar);
 
+    static SkPDFUnion ColorComponent(uint8_t);
+
     /** These two functions do NOT take ownership of char*, and do NOT
         copy the string.  Suitable for passing in static const
         strings. For example:
           SkPDFUnion n = SkPDFUnion::Name("Length");
           SkPDFUnion u = SkPDFUnion::String("Identity"); */
 
     /** SkPDFUnion::Name(const char*) assumes that the passed string
         is already a valid name (that is: it has no control or
         whitespace characters).  This will not copy the name. */
     static SkPDFUnion Name(const char*);
@@ skipping 29 matching lines @@
         SkScalar fScalarValue;
         const char* fStaticString;
         char fSkString[sizeof(SkString)];
         SkPDFObject* fObject;
     };
     enum class Type : char {
         /** It is an error to call emitObject() or addResources() on an
             kDestroyed object. */
         kDestroyed = 0,
         kInt,
+        kColorComponent,
         kBool,
         kScalar,
         kName,
         kString,
         kNameSkS,
         kStringSkS,
         kObjRef,
         kObject,
     };
     Type fType;
@@ skipping 53 matching lines @@
 
     /** Preallocate space for the given number of entries.
      *  @param length The number of array slots to preallocate.
      */
     void reserve(int length);
 
     /** Appends a value to the end of the array.
      *  @param value The value to add to the array.
      */
     void appendInt(int32_t);
+    void appendColorComponent(uint8_t);
     void appendBool(bool);
     void appendScalar(SkScalar);
     void appendName(const char[]);
     void appendName(const SkString&);
     void appendString(const char[]);
     void appendString(const SkString&);
     void appendObject(sk_sp<SkPDFObject>);
     void appendObjRef(sk_sp<SkPDFObject>);
 
 private:
@@ skipping 158 matching lines @@
 };
 
 #ifdef SK_PDF_IMAGE_STATS
 extern SkAtomic<int> gDrawImageCalls;
 extern SkAtomic<int> gJpegImageObjects;
 extern SkAtomic<int> gRegularImageObjects;
 extern void SkPDFImageDumpStats();
 #endif // SK_PDF_IMAGE_STATS
 
 #endif