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

mojo/edk/js/handle_unittest.cc

Index: mojo/edk/js/handle_unittest.cc
diff --git a/third_party/mojo/src/mojo/edk/js/handle_unittest.cc b/mojo/edk/js/handle_unittest.cc
similarity index 98%
copy from third_party/mojo/src/mojo/edk/js/handle_unittest.cc
copy to mojo/edk/js/handle_unittest.cc
index 53f474edbbf57c30225b43b6d09d53e0a7f18433..6ee44445d3a3c77ab71ae4a97bfdb18d14a7bb52 100644
--- a/third_party/mojo/src/mojo/edk/js/handle_unittest.cc
+++ b/mojo/edk/js/handle_unittest.cc
@@ -9,7 +9,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
-namespace js {
+namespace edk {
 
 class HandleWrapperTest : public testing::Test,
                           public HandleCloseObserver {
@@ -86,5 +86,5 @@ TEST_F(HandleWrapperTest, DestroyWithValidHandle) {
   EXPECT_EQ(1, closes_observed_);
 }
 
-}  // namespace js
+}  // namespace edk
 }  // namespace mojo