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

mojo/edk/system/transport_data.h

Index: mojo/edk/system/transport_data.h
diff --git a/third_party/mojo/src/mojo/edk/system/transport_data.h b/mojo/edk/system/transport_data.h
similarity index 94%
copy from third_party/mojo/src/mojo/edk/system/transport_data.h
copy to mojo/edk/system/transport_data.h
index 20bb80fe3c37164a3a103273ddd203b3fbd9396b..7d51ee9a1ad7e391f7ed3cd754af44807376f43b 100644
--- a/third_party/mojo/src/mojo/edk/system/transport_data.h
+++ b/mojo/edk/system/transport_data.h
@@ -19,9 +19,7 @@
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
-namespace system {
-
-class Channel;
+namespace edk {
 
 // This class is used by |MessageInTransit| to represent handles (|Dispatcher|s)
 // in various stages of serialization.
@@ -89,14 +87,14 @@ class MOJO_SYSTEM_IMPL_EXPORT TransportData {
   // The maximum total number of platform handles that may be attached.
   static size_t GetMaxPlatformHandles();
 
-  TransportData(scoped_ptr<DispatcherVector> dispatchers, Channel* channel);
+  explicit TransportData(scoped_ptr<DispatcherVector> dispatchers);
 
   // This is used for users of |MessageInTransit|/|TransportData|/|RawChannel|
   // that want to simply transport data and platform handles, and not
   // |Dispatcher|s. (|Header| will be present, and zero except for
   // |num_platform_handles|, and |platform_handle_table_offset| if necessary.)
   explicit TransportData(
-      embedder::ScopedPlatformHandleVectorPtr platform_handles,
+      ScopedPlatformHandleVectorPtr platform_handles,
       size_t serialized_platform_handle_size);
 
   ~TransportData();
@@ -111,10 +109,10 @@ class MOJO_SYSTEM_IMPL_EXPORT TransportData {
 
   // Gets attached platform-specific handles; this may return null if there are
   // none. Note that the caller may mutate the set of platform-specific handles.
-  const embedder::PlatformHandleVector* platform_handles() const {
+  const PlatformHandleVector* platform_handles() const {
     return platform_handles_.get();
   }
-  embedder::PlatformHandleVector* platform_handles() {
+  PlatformHandleVector* platform_handles() {
     return platform_handles_.get();
   }
 
@@ -143,8 +141,7 @@ class MOJO_SYSTEM_IMPL_EXPORT TransportData {
   static scoped_ptr<DispatcherVector> DeserializeDispatchers(
       const void* buffer,
       size_t buffer_size,
-      embedder::ScopedPlatformHandleVectorPtr platform_handles,
-      Channel* channel);
+      ScopedPlatformHandleVectorPtr platform_handles);
 
  private:
   // To allow us to make compile-assertions about |Header|, etc. in the .cc
@@ -180,12 +177,12 @@ class MOJO_SYSTEM_IMPL_EXPORT TransportData {
   // transport). The vector (if any) owns the handles that it contains (and is
   // responsible for closing them).
   // TODO(vtl): With C++11, change it to a vector of |ScopedPlatformHandle|s.
-  embedder::ScopedPlatformHandleVectorPtr platform_handles_;
+  ScopedPlatformHandleVectorPtr platform_handles_;
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(TransportData);
 };
 
-}  // namespace system
+}  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_TRANSPORT_DATA_H_