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

base/files/file_path_watcher_win.cc

Index: base/files/file_path_watcher_win.cc
diff --git a/base/files/file_path_watcher_win.cc b/base/files/file_path_watcher_win.cc
index 081698f8df12daed09679dfa880445cd370c9ea5..4b3b097a64e2abee76f31a5fc7e86e3033071992 100644
--- a/base/files/file_path_watcher_win.cc
+++ b/base/files/file_path_watcher_win.cc
@@ -106,7 +106,7 @@ bool FilePathWatcherImpl::Watch(const FilePath& path,
   if (!UpdateWatch())
     return false;
 
-  watcher_.StartWatching(handle_, this);
+  watcher_.StartWatching(handle_, this, false);
 
   return true;
 }
@@ -198,7 +198,7 @@ void FilePathWatcherImpl::OnObjectSignaled(HANDLE object) {
 
   // The watch may have been cancelled by the callback.
   if (handle_ != INVALID_HANDLE_VALUE)
-    watcher_.StartWatching(handle_, this);
+    watcher_.StartWatching(handle_, this, false);
 }
 
 // static