Refcounted types should not have public destructors, remoting/ edition

remoting/host/differ_block_unittest.cc

Index: remoting/host/differ_block_unittest.cc
diff --git a/remoting/host/differ_block_unittest.cc b/remoting/host/differ_block_unittest.cc
index 1bfdb196ed95af978ac7b2bdc88d01228e7731b8..a5f8f9b3533c964dcd9ea54d9a2b60ea1ee96cfe 100644
--- a/remoting/host/differ_block_unittest.cc
+++ b/remoting/host/differ_block_unittest.cc
@@ -18,12 +18,6 @@ static void GenerateData(uint8* data, int size) {
   }
 }
 
-class EncodeDoneHandler
-    : public base::RefCountedThreadSafe<EncodeDoneHandler> {
- public:
-  MOCK_METHOD0(EncodeDone, void());
-};
-
 // Memory buffer large enough for 2 blocks aligned to 16 bytes.
 static const int kSizeOfBlock = kBlockSize * kBlockSize * kBytesPerPixel;
 uint8 block_buffer[kSizeOfBlock * 2 + 16];