Remove use of deprecated v8::StartupData::compressed_size.

pdf/instance.cc

Index: pdf/instance.cc
diff --git a/pdf/instance.cc b/pdf/instance.cc
index a0feb5666545129bce5aa599f1721bd5abe4be36..a8a71e8a89889b80274e4055c8dac427e9013520 100644
--- a/pdf/instance.cc
+++ b/pdf/instance.cc
@@ -337,8 +337,6 @@ bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
   pp::PDF::GetV8ExternalSnapshotData(this, &natives.data, &natives.raw_size,
                                      &snapshot.data, &snapshot.raw_size);
   if (natives.data) {
-    natives.compressed_size = natives.raw_size;
-    snapshot.compressed_size = snapshot.raw_size;
     v8::V8::SetNativesDataBlob(&natives);
     v8::V8::SetSnapshotDataBlob(&snapshot);
   }