Use SkJpegEncoder in WebKit platform

third_party/WebKit/Source/platform/graphics/skia/SkiaUtils.h

 /*
  * Copyright (c) 2006,2007,2008, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 125 matching lines @@
                            float width);
 
 // TODO(fmalita): remove in favor of direct SrcRectConstraint use.
 inline PaintCanvas::SrcRectConstraint WebCoreClampingModeToSkiaRectConstraint(
     Image::ImageClampingMode clamp_mode) {
   return clamp_mode == Image::kClampImageToSourceRect
              ? PaintCanvas::kStrict_SrcRectConstraint
              : PaintCanvas::kFast_SrcRectConstraint;
 }
 
+class VectorWStream : public SkWStream {
+ public:
+  VectorWStream(Vector<unsigned char>* dst) : dst_(dst) {
+    DCHECK(dst_);
+    DCHECK_EQ(0UL, dst->size());
+  }
+
+  bool write(const void* buffer, size_t size) override {
+    dst_->Append((const unsigned char*)buffer, size);
+    return true;
+  }
+
+  size_t bytesWritten() const override { return dst_->size(); }
+
+ private:
+  // Does not own
+  Vector<unsigned char>* dst_;
+};
+
 // Skia's smart pointer APIs are preferable over their legacy raw pointer
 // counterparts.
 //
 // General guidelines
 //
 // When receiving ref counted objects from Skia:
 //
 //   1) Use sk_sp-based Skia factories if available (e.g. SkShader::MakeFoo()
 //      instead of SkShader::CreateFoo()).
 //   2) Use sk_sp<T> locals for all objects.
@@ skipping 17 matching lines @@
 //     paint.setShader(SkShader::MakeFoo(...));
 //
 // b) shared ownership
 //
 //     sk_sp<SkShader> shader = SkShader::MakeFoo(...);
 //     paint.setShader(shader);
 
 }  // namespace blink
 
 #endif  // SkiaUtils_h