Revert "Reapply "Use CodeSourceMap for stack traces (still JIT only).""

runtime/vm/zone_text_buffer.h

Index: runtime/vm/zone_text_buffer.h
diff --git a/runtime/vm/zone_text_buffer.h b/runtime/vm/zone_text_buffer.h
deleted file mode 100644
index 28a39eb529f8aaddf0048696beefd5af584d827d..0000000000000000000000000000000000000000
--- a/runtime/vm/zone_text_buffer.h
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#ifndef RUNTIME_VM_ZONE_TEXT_BUFFER_H_
-#define RUNTIME_VM_ZONE_TEXT_BUFFER_H_
-
-#include "vm/allocation.h"
-#include "vm/globals.h"
-
-namespace dart {
-
-class Zone;
-
-// TextBuffer maintains a dynamic character buffer with a printf-style way to
-// append text.
-class ZoneTextBuffer : ValueObject {
- public:
-  ZoneTextBuffer(Zone* zone, intptr_t initial_capacity);
-  ~ZoneTextBuffer() {}
-
-  intptr_t Printf(const char* format, ...) PRINTF_ATTRIBUTE(2, 3);
-  void AddString(const char* s);
-
-  char* buffer() { return buffer_; }
-  intptr_t length() { return length_; }
-
- private:
-  void EnsureCapacity(intptr_t len);
-  Zone* zone_;
-  char* buffer_;
-  intptr_t length_;
-  intptr_t capacity_;
-};
-
-}  // namespace dart
-
-#endif  // RUNTIME_VM_ZONE_TEXT_BUFFER_H_