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

mojo/edk/embedder/platform_channel_pair.h

Index: mojo/edk/embedder/platform_channel_pair.h
diff --git a/third_party/mojo/src/mojo/edk/embedder/platform_channel_pair.h b/mojo/edk/embedder/platform_channel_pair.h
similarity index 89%
copy from third_party/mojo/src/mojo/edk/embedder/platform_channel_pair.h
copy to mojo/edk/embedder/platform_channel_pair.h
index fa322269e4d382cae3b8b755e52aee0a02f9a5b1..74878370fa99423219894ed42ebc868d54b36fe6 100644
--- a/third_party/mojo/src/mojo/edk/embedder/platform_channel_pair.h
+++ b/mojo/edk/embedder/platform_channel_pair.h
@@ -2,22 +2,22 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef THIRD_PARTY_MOJO_SRC_MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_
-#define THIRD_PARTY_MOJO_SRC_MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_
+#ifndef MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_
+#define MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/process/launch.h"
 #include "build/build_config.h"
+#include "mojo/edk/embedder/scoped_platform_handle.h"
+#include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/cpp/system/macros.h"
-#include "third_party/mojo/src/mojo/edk/embedder/scoped_platform_handle.h"
-#include "third_party/mojo/src/mojo/edk/system/system_impl_export.h"
 
 namespace base {
 class CommandLine;
 }
 
 namespace mojo {
-namespace embedder {
+namespace edk {
 
 // It would be nice to refactor base/process/launch.h to have a more platform-
 // independent way of representing handles that are passed to child processes.
@@ -88,7 +88,7 @@ class MOJO_SYSTEM_IMPL_EXPORT PlatformChannelPair {
   MOJO_DISALLOW_COPY_AND_ASSIGN(PlatformChannelPair);
 };
 
-}  // namespace embedder
+}  // namespace edk
 }  // namespace mojo
 
-#endif  // THIRD_PARTY_MOJO_SRC_MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_
+#endif  // MOJO_EDK_EMBEDDER_PLATFORM_CHANNEL_PAIR_H_