Multicast DNS implementation (initial)

net/dns/record_rdata.h

Index: net/dns/record_rdata.h
diff --git a/net/dns/record_rdata.h b/net/dns/record_rdata.h
index 13a2b1e35ae284f5d256af895a7156a5f0fc4c68..83e9a36488dce25754cd26ed5f6ae73f35272c1c 100644
--- a/net/dns/record_rdata.h
+++ b/net/dns/record_rdata.h
@@ -29,6 +29,7 @@ class NET_EXPORT_PRIVATE RecordRdata {
 
   virtual bool IsEqual(const RecordRdata* other) const = 0;
   virtual uint16 Type() const = 0;
+  virtual scoped_ptr<const RecordRdata> Clone() const = 0;
 
  protected:
   RecordRdata();
@@ -51,6 +52,7 @@ class NET_EXPORT_PRIVATE SrvRecordRdata : public RecordRdata {
 
   virtual bool IsEqual(const RecordRdata* other) const OVERRIDE;
   virtual uint16 Type() const OVERRIDE;
+  virtual scoped_ptr<const RecordRdata> Clone() const OVERRIDE;
 
   uint16 priority() const { return priority_; }
   uint16 weight() const { return weight_; }
@@ -81,6 +83,7 @@ class NET_EXPORT_PRIVATE ARecordRdata : public RecordRdata {
                                          const DnsRecordParser& parser);
   virtual bool IsEqual(const RecordRdata* other) const OVERRIDE;
   virtual uint16 Type() const OVERRIDE;
+  virtual scoped_ptr<const RecordRdata> Clone() const OVERRIDE;
 
   const IPAddressNumber& address() const { return address_; }
 
@@ -103,6 +106,7 @@ class NET_EXPORT_PRIVATE AAAARecordRdata : public RecordRdata {
                                          const DnsRecordParser& parser);
   virtual bool IsEqual(const RecordRdata* other) const OVERRIDE;
   virtual uint16 Type() const OVERRIDE;
+  virtual scoped_ptr<const RecordRdata> Clone() const OVERRIDE;
 
   const IPAddressNumber& address() const { return address_; }
 
@@ -125,6 +129,7 @@ class NET_EXPORT_PRIVATE CnameRecordRdata : public RecordRdata {
                                              const DnsRecordParser& parser);
   virtual bool IsEqual(const RecordRdata* other) const OVERRIDE;
   virtual uint16 Type() const OVERRIDE;
+  virtual scoped_ptr<const RecordRdata> Clone() const OVERRIDE;
 
   std::string cname() const { return cname_; }
 
@@ -147,6 +152,7 @@ class NET_EXPORT_PRIVATE PtrRecordRdata : public RecordRdata {
                                            const DnsRecordParser& parser);
   virtual bool IsEqual(const RecordRdata* other) const OVERRIDE;
   virtual uint16 Type() const OVERRIDE;
+  virtual scoped_ptr<const RecordRdata> Clone() const OVERRIDE;
 
   std::string ptrdomain() const { return ptrdomain_; }
 
@@ -170,6 +176,7 @@ class NET_EXPORT_PRIVATE TxtRecordRdata : public RecordRdata {
                                            const DnsRecordParser& parser);
   virtual bool IsEqual(const RecordRdata* other) const OVERRIDE;
   virtual uint16 Type() const OVERRIDE;
+  virtual scoped_ptr<const RecordRdata> Clone() const OVERRIDE;
 
   const std::vector<std::string>& texts() const { return texts_; }