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diff --git a/include/grpc/support/slice_buffer.h b/include/grpc/support/slice_buffer.h
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+++ b/include/grpc/support/slice_buffer.h
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+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __GRPC_SUPPORT_SLICE_BUFFER_H__
+#define __GRPC_SUPPORT_SLICE_BUFFER_H__
+
+#include <grpc/support/slice.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Represents an expandable array of slices, to be interpreted as a single item
+   TODO(ctiller): inline some small number of elements into the struct, to
+                  avoid per-call allocations */
+typedef struct {
+  /* slices in the array */
+  gpr_slice *slices;
+  /* the number of slices in the array */
+  size_t count;
+  /* the number of slices allocated in the array */
+  size_t capacity;
+  /* the combined length of all slices in the array */
+  size_t length;
+} gpr_slice_buffer;
+
+/* initialize a slice buffer */
+void gpr_slice_buffer_init(gpr_slice_buffer *sb);
+/* destroy a slice buffer - unrefs any held elements */
+void gpr_slice_buffer_destroy(gpr_slice_buffer *sb);
+/* Add an element to a slice buffer - takes ownership of the slice.
+   This function is allowed to concatenate the passed in slice to the end of
+   some other slice if desired by the slice buffer. */
+void gpr_slice_buffer_add(gpr_slice_buffer *sb, gpr_slice slice);
+/* add an element to a slice buffer - takes ownership of the slice and returns
+   the index of the slice.
+   Guarantees that the slice will not be concatenated at the end of another
+   slice (i.e. the data for this slice will begin at the first byte of the
+   slice at the returned index in sb->slices)
+   The implementation MAY decide to concatenate data at the end of a small
+   slice added in this fashion. */
+size_t gpr_slice_buffer_add_indexed(gpr_slice_buffer *sb, gpr_slice slice);
+void gpr_slice_buffer_addn(gpr_slice_buffer *sb, gpr_slice *slices, size_t n);
+/* add a very small (less than 8 bytes) amount of data to the end of a slice
+   buffer: returns a pointer into which to add the data */
+gpr_uint8 *gpr_slice_buffer_tiny_add(gpr_slice_buffer *sb, int len);
+/* clear a slice buffer, unref all elements */
+void gpr_slice_buffer_reset_and_unref(gpr_slice_buffer *sb);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* __GRPC_SUPPORT_SLICE_BUFFER_H__ */