Revert of Update mojo sdk to rev afb4440fd5a10cba980878c326180b7ad7960480

mojo/edk/embedder/configuration.h

-// Copyright 2014 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_EDK_EMBEDDER_CONFIGURATION_H_
-#define MOJO_EDK_EMBEDDER_CONFIGURATION_H_
-
-#include <stddef.h>
-
-namespace mojo {
-namespace embedder {
-
-// A set of constants that the Mojo system internally uses. These values should
-// be consistent across all processes on the same system.
-//
-// In general, there should be no need to change these values from their
-// defaults. However, if you do change them, you must do so before
-// initialization.
-struct Configuration {
-  // Maximum number of open (Mojo) handles. The default is 1,000,000.
-  //
-  // TODO(vtl): This doesn't count "live" handles, some of which may live in
-  // messages.
-  size_t max_handle_table_size;
-
-  // Maximum number of active memory mappings. The default is 1,000,000.
-  size_t max_mapping_table_sze;
-
-  // Upper limit of |MojoWaitMany()|'s |num_handles|. The default is 1,000,000.
-  // Must be same as or smaller than |max_handle_table_size|.
-  size_t max_wait_many_num_handles;
-
-  // Maximum data size of messages sent over message pipes, in bytes. The
-  // default is 4MB.
-  size_t max_message_num_bytes;
-
-  // Maximum number of handles that can be attached to messages sent over
-  // message pipes. The default is 10,000.
-  size_t max_message_num_handles;
-
-  // Maximum capacity of a data pipe, in bytes. The default is 256MB. This value
-  // must fit into a |uint32_t|. WARNING: If you bump it closer to 2^32, you
-  // must audit all the code to check that we don't overflow (2^31 would
-  // definitely be risky; up to 2^30 is probably okay).
-  size_t max_data_pipe_capacity_bytes;
-
-  // Default data pipe capacity, if not specified explicitly in the creation
-  // options. The default is 1MB.
-  size_t default_data_pipe_capacity_bytes;
-
-  // Alignment for the "start" of the data buffer used by data pipes. (The
-  // alignment of elements will depend on this and the element size.)  The
-  // default is 16 bytes.
-  size_t data_pipe_buffer_alignment_bytes;
-
-  // Maximum size of a single shared memory segment, in bytes. The default is
-  // 1GB.
-  //
-  // TODO(vtl): Set this hard limit appropriately (e.g., higher on 64-bit).
-  // (This will also entail some auditing to make sure I'm not messing up my
-  // checks anywhere.)
-  size_t max_shared_memory_num_bytes;
-};
-
-}  // namespace embedder
-}  // namespace mojo
-
-#endif  // MOJO_EDK_EMBEDDER_CONFIGURATION_H_