Change the canonical way to include the C bindings headers to <mojo/bindings/*.h>.

mojo/public/c/bindings/buffer.h

-// Copyright 2016 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 MOJO_PUBLIC_C_BINDINGS_BUFFER_H_
-#define MOJO_PUBLIC_C_BINDINGS_BUFFER_H_
-
-#include <mojo/macros.h>
-#include <mojo/system/handle.h>
-#include <stdint.h>
-
-MOJO_BEGIN_EXTERN_C
-
-// |MojomBuffer| is used to track a buffer state for mojom serialization. The
-// user must initialize this struct themselves. See the fields for details.
-struct MojomBuffer {
-  char* buf;
-  // The number of bytes described by |buf|.
-  uint32_t buf_size;
-  // Must be initialized to 0. MojomBuffer_Allocate() will update it as it
-  // consumes |buf|.
-  uint32_t num_bytes_used;
-};
-
-// Allocates |num_bytes| (rounded up to 8 bytes) from |buf|. Returns NULL if
-// there isn't enough space left to allocate.
-void* MojomBuffer_Allocate(struct MojomBuffer* buf, uint32_t num_bytes);
-
-// |MojomHandleBuffer| is used to track handle offsets during serialization.
-// Handles are moved into the |handles| array, and are referred to by index
-// into the array. The user must initialize this struct themselves. See the
-// fields for details.
-struct MojomHandleBuffer {
-  // |handles| must contain enough space to store all the valid MojoHandles
-  // encountered during serialization.
-  MojoHandle* handles;
-  // Size of the |handles| array.
-  uint32_t num_handles;
-  // The number of handles used so far in |handles|. As handles are moved into
-  // |handles|, this counter is incremented. The caller can use it to determine
-  // how many handles were moved into |handles| after serialization. This
-  // counter must be initialized appropriately before the struct can be used.
-  uint32_t num_handles_used;
-};
-
-MOJO_END_EXTERN_C
-
-#endif  // MOJO_PUBLIC_C_BINDINGS_BUFFER_H_