Encode reservation meta data in the snapshot blob.

src/snapshot-source-sink.cc

Index: src/snapshot-source-sink.cc
diff --git a/src/snapshot-source-sink.cc b/src/snapshot-source-sink.cc
index 9935ff73963c7e157b40b33c3e4c2da6dbe5b380..30b282d3b99870890ef74d4a0c0e147b76f051d0 100644
--- a/src/snapshot-source-sink.cc
+++ b/src/snapshot-source-sink.cc
@@ -14,9 +14,8 @@ namespace v8 {
 namespace internal {
 
 
-SnapshotByteSource::SnapshotByteSource(const byte* array, int length)
-    : data_(array), length_(length), position_(0) {
-}
+SnapshotByteSource::SnapshotByteSource(Vector<const byte> payload)
+    : data_(payload.start()), length_(payload.length()), position_(0) {}
 
 
 SnapshotByteSource::~SnapshotByteSource() { }
@@ -52,15 +51,17 @@ void SnapshotByteSink::PutInt(uintptr_t integer, const char* description) {
   if (bytes > 3) Put(static_cast<int>((integer >> 24) & 0xff), "IntPart4");
 }
 
-void SnapshotByteSink::PutRaw(byte* data, int number_of_bytes,
+
+void SnapshotByteSink::PutRaw(const byte* data, int number_of_bytes,
                               const char* description) {
-  data_.AddAll(Vector<byte>(data, number_of_bytes));
+  data_.AddAll(Vector<byte>(const_cast<byte*>(data), number_of_bytes));
 }
 
-void SnapshotByteSink::PutBlob(byte* data, int number_of_bytes,
+
+void SnapshotByteSink::PutBlob(Vector<const byte> blob,
                                const char* description) {
-  PutInt(number_of_bytes, description);
-  PutRaw(data, number_of_bytes, description);
+  PutInt(blob.length(), description);
+  PutRaw(blob.start(), blob.length(), description);
 }