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

mojo/edk/system/test_channel_endpoint_client.h

Index: mojo/edk/system/test_channel_endpoint_client.h
diff --git a/mojo/edk/system/test_channel_endpoint_client.h b/mojo/edk/system/test_channel_endpoint_client.h
index 9daae4b4f1ef87b1943d3ce9929a6c07f918498d..df044606668ffc50403b4a5e6761c5c8d924bbb1 100644
--- a/mojo/edk/system/test_channel_endpoint_client.h
+++ b/mojo/edk/system/test_channel_endpoint_client.h
@@ -11,7 +11,7 @@
 #include "mojo/edk/system/channel_endpoint_client.h"
 #include "mojo/edk/system/message_in_transit_queue.h"
 #include "mojo/edk/system/mutex.h"
-#include "mojo/edk/system/ref_ptr.h"
+#include "mojo/edk/util/ref_ptr.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
@@ -23,10 +23,10 @@ namespace test {
 
 class TestChannelEndpointClient final : public ChannelEndpointClient {
  public:
-  // Note: Use |MakeRefCounted<TestChannelEndpointClient>()|.
+  // Note: Use |util::MakeRefCounted<TestChannelEndpointClient>()|.
 
   // Initializes with the given port and endpoint.
-  void Init(unsigned port, RefPtr<ChannelEndpoint>&& endpoint);
+  void Init(unsigned port, util::RefPtr<ChannelEndpoint>&& endpoint);
 
   // Returns true if we're detached from the |ChannelEndpoint|.
   bool IsDetached() const;
@@ -55,7 +55,7 @@ class TestChannelEndpointClient final : public ChannelEndpointClient {
   mutable Mutex mutex_;
 
   unsigned port_ MOJO_GUARDED_BY(mutex_);
-  RefPtr<ChannelEndpoint> endpoint_ MOJO_GUARDED_BY(mutex_);
+  util::RefPtr<ChannelEndpoint> endpoint_ MOJO_GUARDED_BY(mutex_);
 
   MessageInTransitQueue messages_ MOJO_GUARDED_BY(mutex_);