Add SkColor4f serialization

tools/debugger/SkJsonWriteBuffer.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkJsonWriteBuffer.h"
 
 #include "SkDrawCommand.h"
@@ skipping 65 matching lines @@
 }
 
 void SkJsonWriteBuffer::writeColorArray(const SkColor* color, uint32_t count) {
     Json::Value jsonArray(Json::arrayValue);
     for (uint32_t i = 0; i < count; ++i) {
         jsonArray.append(SkDrawCommand::MakeJsonColor(color[i]));
     }
     this->append("colorArray", jsonArray);
 }
 
+void SkJsonWriteBuffer::writeColor4f(const SkColor4f& color) {
+    this->append("color", SkDrawCommand::MakeJsonColor4f(color));
+}
+
+void SkJsonWriteBuffer::writeColor4fArray(const SkColor4f* color, uint32_t count) {
+    Json::Value jsonArray(Json::arrayValue);
+    for (uint32_t i = 0; i < count; ++i) {
+        jsonArray.append(SkDrawCommand::MakeJsonColor4f(color[i]));
+    }
+    this->append("colorArray", jsonArray);
+}
+
 void SkJsonWriteBuffer::writePoint(const SkPoint& point) {
     this->append("point", SkDrawCommand::MakeJsonPoint(point));
 }
 
 void SkJsonWriteBuffer::writePointArray(const SkPoint* point, uint32_t count) {
     Json::Value jsonArray(Json::arrayValue);
     for (uint32_t i = 0; i < count; ++i) {
         jsonArray.append(SkDrawCommand::MakeJsonPoint(point[i]));
     }
     this->append("pointArray", jsonArray);
@@ skipping 39 matching lines @@
 }
 
 void SkJsonWriteBuffer::writeTypeface(SkTypeface* typeface) {
     // Unsupported
     this->append("typeface", Json::Value());
 }
 
 void SkJsonWriteBuffer::writePaint(const SkPaint& paint) {
     this->append("paint", SkDrawCommand::MakeJsonPaint(paint, *fUrlDataManager));
 }