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

mojo/edk/embedder/simple_platform_shared_buffer.cc

Index: mojo/edk/embedder/simple_platform_shared_buffer.cc
diff --git a/third_party/mojo/src/mojo/edk/embedder/simple_platform_shared_buffer.cc b/mojo/edk/embedder/simple_platform_shared_buffer.cc
similarity index 96%
copy from third_party/mojo/src/mojo/edk/embedder/simple_platform_shared_buffer.cc
copy to mojo/edk/embedder/simple_platform_shared_buffer.cc
index 866250c9f03c08a92b430f0ecb0a92d0f5b480d8..c09eb8072a99de902f1ac413bc4adb74c284f2eb 100644
--- a/third_party/mojo/src/mojo/edk/embedder/simple_platform_shared_buffer.cc
+++ b/mojo/edk/embedder/simple_platform_shared_buffer.cc
@@ -8,7 +8,7 @@
 #include "mojo/edk/embedder/platform_handle_utils.h"
 
 namespace mojo {
-namespace embedder {
+namespace edk {
 
 // static
 SimplePlatformSharedBuffer* SimplePlatformSharedBuffer::Create(
@@ -77,7 +77,7 @@ scoped_ptr<PlatformSharedBufferMapping> SimplePlatformSharedBuffer::MapNoCheck(
 }
 
 ScopedPlatformHandle SimplePlatformSharedBuffer::DuplicatePlatformHandle() {
-  return mojo::embedder::DuplicatePlatformHandle(handle_.get());
+  return mojo::edk::DuplicatePlatformHandle(handle_.get());
 }
 
 ScopedPlatformHandle SimplePlatformSharedBuffer::PassPlatformHandle() {
@@ -104,5 +104,5 @@ size_t SimplePlatformSharedBufferMapping::GetLength() const {
   return length_;
 }
 
-}  // namespace embedder
+}  // namespace edk
 }  // namespace mojo