diff --git a/quiche/common/quiche_buffer_allocator.h b/quiche/common/quiche_buffer_allocator.h
new file mode 100644
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+++ b/quiche/common/quiche_buffer_allocator.h
@@ -0,0 +1,126 @@
+// Copyright (c) 2012 The Chromium 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 QUICHE_COMMON_QUICHE_BUFFER_ALLOCATOR_H_
+#define QUICHE_COMMON_QUICHE_BUFFER_ALLOCATOR_H_
+
+#include <stddef.h>
+
+#include <memory>
+
+#include "absl/strings/string_view.h"
+#include "quiche/common/platform/api/quiche_export.h"
+#include "quiche/common/platform/api/quiche_iovec.h"
+
+namespace quiche {
+
+// Abstract base class for classes which allocate and delete buffers.
+class QUICHE_EXPORT_PRIVATE QuicheBufferAllocator {
+ public:
+  virtual ~QuicheBufferAllocator() = default;
+
+  // Returns or allocates a new buffer of |size|. Never returns null.
+  virtual char* New(size_t size) = 0;
+
+  // Returns or allocates a new buffer of |size| if |flag_enable| is true.
+  // Otherwise, returns a buffer that is compatible with this class directly
+  // with operator new. Never returns null.
+  virtual char* New(size_t size, bool flag_enable) = 0;
+
+  // Releases a buffer.
+  virtual void Delete(char* buffer) = 0;
+
+  // Marks the allocator as being idle. Serves as a hint to notify the allocator
+  // that it should release any resources it's still holding on to.
+  virtual void MarkAllocatorIdle() {}
+};
+
+// A deleter that can be used to manage ownership of buffers allocated via
+// QuicheBufferAllocator through std::unique_ptr.
+class QUICHE_EXPORT_PRIVATE QuicheBufferDeleter {
+ public:
+  explicit QuicheBufferDeleter(QuicheBufferAllocator* allocator)
+      : allocator_(allocator) {}
+
+  QuicheBufferAllocator* allocator() { return allocator_; }
+  void operator()(char* buffer) { allocator_->Delete(buffer); }
+
+ private:
+  QuicheBufferAllocator* allocator_;
+};
+
+using QuicheUniqueBufferPtr = std::unique_ptr<char[], QuicheBufferDeleter>;
+
+inline QuicheUniqueBufferPtr MakeUniqueBuffer(QuicheBufferAllocator* allocator,
+                                              size_t size) {
+  return QuicheUniqueBufferPtr(allocator->New(size),
+                               QuicheBufferDeleter(allocator));
+}
+
+// QuicheUniqueBufferPtr with a length attached to it.  Similar to
+// QuicheMemSlice, except unlike QuicheMemSlice, QuicheBuffer is mutable and is
+// not platform-specific.  Also unlike QuicheMemSlice, QuicheBuffer can be
+// empty.
+class QUICHE_EXPORT_PRIVATE QuicheBuffer {
+ public:
+  QuicheBuffer() : buffer_(nullptr, QuicheBufferDeleter(nullptr)), size_(0) {}
+  QuicheBuffer(QuicheBufferAllocator* allocator, size_t size)
+      : buffer_(MakeUniqueBuffer(allocator, size)), size_(size) {}
+
+  QuicheBuffer(QuicheUniqueBufferPtr buffer, size_t size)
+      : buffer_(std::move(buffer)), size_(size) {}
+
+  // Make sure the move constructor zeroes out the size field.
+  QuicheBuffer(QuicheBuffer&& other)
+      : buffer_(std::move(other.buffer_)), size_(other.size_) {
+    other.buffer_ = nullptr;
+    other.size_ = 0;
+  }
+  QuicheBuffer& operator=(QuicheBuffer&& other) {
+    buffer_ = std::move(other.buffer_);
+    size_ = other.size_;
+
+    other.buffer_ = nullptr;
+    other.size_ = 0;
+    return *this;
+  }
+
+  // Factory method to create a QuicheBuffer that holds a copy of `data`.
+  static QuicheBuffer Copy(QuicheBufferAllocator* allocator,
+                           absl::string_view data) {
+    QuicheBuffer buffer(allocator, data.size());
+    memcpy(buffer.data(), data.data(), data.size());
+    return buffer;
+  }
+
+  // Factory method to create a QuicheBuffer of length `buffer_length` that
+  // holds a copy of `buffer_length` bytes from `iov` starting at offset
+  // `iov_offset`.  `iov` must be at least `iov_offset + buffer_length` total
+  // length.
+  static QuicheBuffer CopyFromIovec(QuicheBufferAllocator* allocator,
+                                    const struct iovec* iov, int iov_count,
+                                    size_t iov_offset, size_t buffer_length);
+
+  const char* data() const { return buffer_.get(); }
+  char* data() { return buffer_.get(); }
+  size_t size() const { return size_; }
+  bool empty() const { return size_ == 0; }
+  absl::string_view AsStringView() const {
+    return absl::string_view(data(), size());
+  }
+
+  // Releases the ownership of the underlying buffer.
+  QuicheUniqueBufferPtr Release() {
+    size_ = 0;
+    return std::move(buffer_);
+  }
+
+ private:
+  QuicheUniqueBufferPtr buffer_;
+  size_t size_;
+};
+
+}  // namespace quiche
+
+#endif  // QUICHE_COMMON_QUICHE_BUFFER_ALLOCATOR_H_