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

mojo/edk/js/mojo_runner_delegate.h

Index: mojo/edk/js/mojo_runner_delegate.h
diff --git a/third_party/mojo/src/mojo/edk/js/mojo_runner_delegate.h b/mojo/edk/js/mojo_runner_delegate.h
similarity index 96%
copy from third_party/mojo/src/mojo/edk/js/mojo_runner_delegate.h
copy to mojo/edk/js/mojo_runner_delegate.h
index 423eefb1b455871a0af5011dfbe08a5cb873feb4..7b50b30a6909917d34976d12f9aba14e6aee9245 100644
--- a/third_party/mojo/src/mojo/edk/js/mojo_runner_delegate.h
+++ b/mojo/edk/js/mojo_runner_delegate.h
@@ -10,7 +10,7 @@
 #include "mojo/public/c/system/core.h"
 
 namespace mojo {
-namespace js {
+namespace edk {
 
 class MojoRunnerDelegate : public gin::ModuleRunnerDelegate {
  public:
@@ -27,7 +27,7 @@ class MojoRunnerDelegate : public gin::ModuleRunnerDelegate {
   DISALLOW_COPY_AND_ASSIGN(MojoRunnerDelegate);
 };
 
-}  // namespace js
+}  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_JS_MOJO_RUNNER_DELEGATE_H_