RefCounted types should not have public destructors, media/ and gpu/ edition

media/base/buffers_unittest.cc

Index: media/base/buffers_unittest.cc
diff --git a/media/base/buffers_unittest.cc b/media/base/buffers_unittest.cc
index 206f4f0504a86d48201bcc12da233ac7338614e0..6cf0e092bca7f5a329b11767d82391d4619489b1 100644
--- a/media/base/buffers_unittest.cc
+++ b/media/base/buffers_unittest.cc
@@ -25,12 +25,13 @@ class TestBuffer : public Buffer {
         size_(size) {
   }
 
-  virtual ~TestBuffer() {}
-
   // Buffer implementation.
   virtual const uint8* GetData() const OVERRIDE { return data_; }
   virtual int GetDataSize() const OVERRIDE { return size_; }
 
+ protected:
+  virtual ~TestBuffer() {}
+
  private:
   const uint8* data_;
   int size_;