Revert "Support external startup data in V8."

src/snapshot-source-sink.h

Index: src/snapshot-source-sink.h
diff --git a/src/snapshot-source-sink.h b/src/snapshot-source-sink.h
deleted file mode 100644
index 0911e7cf828dc3e4712eeeeeb4ee770321740a64..0000000000000000000000000000000000000000
--- a/src/snapshot-source-sink.h
+++ /dev/null
@@ -1,88 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_SNAPSHOT_SOURCE_SINK_H_
-#define V8_SNAPSHOT_SOURCE_SINK_H_
-
-#include "src/checks.h"
-#include "src/utils.h"
-
-namespace v8 {
-namespace internal {
-
-
-/**
- * Source to read snapshot and builtins files from.
- *
- * Note: Memory ownership remains with callee.
- */
-class SnapshotByteSource V8_FINAL {
- public:
-  SnapshotByteSource(const byte* array, int length);
-  ~SnapshotByteSource();
-
-  bool HasMore() { return position_ < length_; }
-
-  int Get() {
-    ASSERT(position_ < length_);
-    return data_[position_++];
-  }
-
-  int32_t GetUnalignedInt();
-
-  void Advance(int by) { position_ += by; }
-
-  void CopyRaw(byte* to, int number_of_bytes);
-
-  inline int GetInt() {
-    // This way of variable-length encoding integers does not suffer from branch
-    // mispredictions.
-    uint32_t answer = GetUnalignedInt();
-    int bytes = answer & 3;
-    Advance(bytes);
-    uint32_t mask = 0xffffffffu;
-    mask >>= 32 - (bytes << 3);
-    answer &= mask;
-    answer >>= 2;
-    return answer;
-  }
-
-  bool GetBlob(const byte** data, int* number_of_bytes);
-
-  bool AtEOF();
-
-  int position() { return position_; }
-
- private:
-  const byte* data_;
-  int length_;
-  int position_;
-
-  DISALLOW_COPY_AND_ASSIGN(SnapshotByteSource);
-};
-
-
-/**
- * Sink to write snapshot files to.
- *
- * Subclasses must implement actual storage or i/o.
- */
-class SnapshotByteSink {
- public:
-  virtual ~SnapshotByteSink() { }
-  virtual void Put(int byte, const char* description) = 0;
-  virtual void PutSection(int byte, const char* description) {
-    Put(byte, description);
-  }
-  void PutInt(uintptr_t integer, const char* description);
-  void PutRaw(byte* data, int number_of_bytes, const char* description);
-  void PutBlob(byte* data, int number_of_bytes, const char* description);
-  virtual int Position() = 0;
-};
-
-
-}  // namespace v8::internal
-}  // namespace v8
-
-#endif  // V8_SNAPSHOT_SOURCE_SINK_H_