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

mojo/edk/embedder/simple_platform_support.cc

Index: mojo/edk/embedder/simple_platform_support.cc
diff --git a/third_party/mojo/src/mojo/edk/embedder/simple_platform_support.cc b/mojo/edk/embedder/simple_platform_support.cc
similarity index 79%
copy from third_party/mojo/src/mojo/edk/embedder/simple_platform_support.cc
copy to mojo/edk/embedder/simple_platform_support.cc
index 7a83783ad2bee045435643bdda8204ef0b449cc4..814cd68896a82772f2ab2f495886d6b5fb82ccd2 100644
--- a/third_party/mojo/src/mojo/edk/embedder/simple_platform_support.cc
+++ b/mojo/edk/embedder/simple_platform_support.cc
@@ -2,13 +2,13 @@
 // 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/simple_platform_support.h"
+#include "mojo/edk/embedder/simple_platform_support.h"
 
 #include "base/rand_util.h"
-#include "third_party/mojo/src/mojo/edk/embedder/simple_platform_shared_buffer.h"
+#include "mojo/edk/embedder/simple_platform_shared_buffer.h"
 
 namespace mojo {
-namespace embedder {
+namespace edk {
 
 void SimplePlatformSupport::GetCryptoRandomBytes(void* bytes,
                                                  size_t num_bytes) {
@@ -27,5 +27,5 @@ PlatformSharedBuffer* SimplePlatformSupport::CreateSharedBufferFromHandle(
       num_bytes, platform_handle.Pass());
 }
 
-}  // namespace embedder
+}  // namespace edk
 }  // namespace mojo