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

mojo/edk/embedder/platform_channel_pair_win.cc

Index: mojo/edk/embedder/platform_channel_pair_win.cc
diff --git a/third_party/mojo/src/mojo/edk/embedder/platform_channel_pair_win.cc b/mojo/edk/embedder/platform_channel_pair_win.cc
similarity index 95%
copy from third_party/mojo/src/mojo/edk/embedder/platform_channel_pair_win.cc
copy to mojo/edk/embedder/platform_channel_pair_win.cc
index 2073ebb2d28014b3dba11dd75b625e7f32457d65..8ba325ae95841575bbc7176f98b123a509d4682d 100644
--- a/third_party/mojo/src/mojo/edk/embedder/platform_channel_pair_win.cc
+++ b/mojo/edk/embedder/platform_channel_pair_win.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "third_party/mojo/src/mojo/edk/embedder/platform_channel_pair.h"
+#include "mojo/edk/embedder/platform_channel_pair.h"
 
 #include <windows.h>
 
@@ -14,10 +14,10 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/win/windows_version.h"
-#include "third_party/mojo/src/mojo/edk/embedder/platform_handle.h"
+#include "mojo/edk/embedder/platform_handle.h"
 
 namespace mojo {
-namespace embedder {
+namespace edk {
 
 namespace {
 
@@ -107,5 +107,5 @@ void PlatformChannelPair::PrepareToPassClientHandleToChildProcess(
       base::IntToString(HandleToLong(client_handle_.get().handle)));
 }
 
-}  // namespace embedder
+}  // namespace edk
 }  // namespace mojo