[fuchsia][skp warmup] dont serialize font data

Author: freiling

shell/common/rasterizer.cc

@@ -479,6 +479,7 @@ static sk_sp<SkData> ScreenshotLayerTreeAsPicture(
 #if defined(OS_FUCHSIA)
   SkSerialProcs procs = {0};
   procs.fImageProc = SerializeImageWithoutData;
+  procs.fTypefaceProc = SerializeTypefaceWithoutData;
 #else
   SkSerialProcs procs = {0};
   procs.fTypefaceProc = SerializeTypefaceWithData;

shell/common/serialization_callbacks.cc

@@ -7,15 +7,21 @@
 #include "include/core/SkPicture.h"
 #include "include/core/SkStream.h"
 #include "include/core/SkTypeface.h"
+#include "include/core/SkSerialProcs.h"
+
 
 namespace flutter {
 
 sk_sp<SkData> SerializeTypefaceWithoutData(SkTypeface* typeface, void* ctx) {
-  return typeface->serialize(SkTypeface::SerializeBehavior::kDoIncludeData);
+  return SkData::MakeEmpty();
 }
 
 sk_sp<SkData> SerializeTypefaceWithData(SkTypeface* typeface, void* ctx) {
-  return typeface->serialize(SkTypeface::SerializeBehavior::kDontIncludeData);
+  return typeface->serialize(SkTypeface::SerializeBehavior::kDoIncludeData);
+}
+
+sk_sp<SkTypeface> DeserializeTypefaceWithoutData(const void* data, size_t length, void* ctx){
+  return SkTypeface::MakeDefault();
 }
 
 struct ImageMetaData {

shell/common/serialization_callbacks.h

@@ -15,13 +15,15 @@ namespace flutter {
 
 sk_sp<SkData> SerializeTypefaceWithoutData(SkTypeface* typeface, void* ctx);
 sk_sp<SkData> SerializeTypefaceWithData(SkTypeface* typeface, void* ctx);
+sk_sp<SkTypeface> DeserializeTypefaceWithoutData(const void* data, size_t length, void* ctx);
 
 // Serializes only the metadata of the image and not the underlying pixel data.
 sk_sp<SkData> SerializeImageWithoutData(SkImage* image, void* ctx);
 sk_sp<SkImage> DeserializeImageWithoutData(const void* data,
                                            size_t length,
                                            void* ctx);
 
+
 }  // namespace flutter
 
 #endif  // FLUTTER_SHELL_COMMON_SERIALIZATION_CALLBACKS_H_