EDK: Move ref counting classes to mojo/edk/util.

mojo/edk/util/ref_counted_unittest.cc

Index: mojo/edk/util/ref_counted_unittest.cc
diff --git a/mojo/edk/system/ref_counted_unittest.cc b/mojo/edk/util/ref_counted_unittest.cc
similarity index 99%
rename from mojo/edk/system/ref_counted_unittest.cc
rename to mojo/edk/util/ref_counted_unittest.cc
index 084bfc4f549eccec5666c5d1be3fbf053b034ce5..acb13c18592000dfe8a55cad35c41cd10ee7711c 100644
--- a/mojo/edk/system/ref_counted_unittest.cc
+++ b/mojo/edk/util/ref_counted_unittest.cc
@@ -6,7 +6,7 @@
 // TODO(vtl): Possibly we could separate these tests out better, since a lot of
 // it is actually testing |RefPtr|.
 
-#include "mojo/edk/system/ref_counted.h"
+#include "mojo/edk/util/ref_counted.h"
 
 #include "build/build_config.h"
 #include "mojo/public/cpp/system/macros.h"
@@ -31,7 +31,7 @@
 #endif
 
 namespace mojo {
-namespace system {
+namespace util {
 namespace {
 
 class MyClass : public RefCountedThreadSafe<MyClass> {
@@ -606,5 +606,5 @@ TEST(RefCountedTest, MAYBE_DebugChecks) {
 // TODO(vtl): Add (threaded) stress tests.
 
 }  // namespace
-}  // namespace system
+}  // namespace util
 }  // namespace mojo