Add a Mojo EDK for Chrome that uses one OS pipe per message pipe.

mojo/edk/system/options_validation.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.
 
 // Functions to help with verifying various |Mojo...Options| structs from the
 // (public, C) API. These are "extensible" structs, which all have |struct_size|
 // as their first member. All fields (other than |struct_size|) are optional,
 // but any |flags| specified must be known to the system (otherwise, an error of
 // |MOJO_RESULT_UNIMPLEMENTED| should be returned).
 
 #ifndef MOJO_EDK_SYSTEM_OPTIONS_VALIDATION_H_
 #define MOJO_EDK_SYSTEM_OPTIONS_VALIDATION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "mojo/edk/system/memory.h"
 #include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/c/system/types.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
-namespace system {
+namespace edk {
 
 template <class Options>
 class UserOptionsReader {
  public:
   // Constructor from a |UserPointer<const Options>| (which it checks -- this
   // constructor has side effects!).
   // Note: We initialize |options_reader_| without checking, since we do a check
   // in |GetSizeForReader()|.
   explicit UserOptionsReader(UserPointer<const Options> options)
       : options_reader_(UserPointer<const char>::Reader::NoCheck(),
@@ skipping 52 matching lines @@
 //
 // (We can't just give |HasMember()| a member pointer template argument instead,
 // since there's no good/strictly-correct way to get an offset from that.)
 //
 // TODO(vtl): With C++11, use |sizeof(Options::member)| instead of (the
 // contortion below). We might also be able to pull out the type |Options| from
 // |reader| (using |decltype|) instead of requiring a parameter.
 #define OPTIONS_STRUCT_HAS_MEMBER(Options, member, reader) \
   reader.HasMember(offsetof(Options, member), sizeof(reader.options().member))
 
-}  // namespace system
+}  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_OPTIONS_VALIDATION_H_