Make net and ipc explicitly use the base namespace for Values.

net/dns/dns_transaction.cc

Index: net/dns/dns_transaction.cc
diff --git a/net/dns/dns_transaction.cc b/net/dns/dns_transaction.cc
index fef5f26ba647b79f9eae85e21f9b7f56d3356775..6d377104e3e63e6a98eceb5b0a280c9765b0480d 100644
--- a/net/dns/dns_transaction.cc
+++ b/net/dns/dns_transaction.cc
@@ -57,10 +57,10 @@ bool IsIPLiteral(const std::string& hostname) {
   return ParseIPLiteralToNumber(hostname, &ip);
 }
 
-Value* NetLogStartCallback(const std::string* hostname,
+base::Value* NetLogStartCallback(const std::string* hostname,
                            uint16 qtype,
                            NetLog::LogLevel /* log_level */) {
-  DictionaryValue* dict = new DictionaryValue();
+  base::DictionaryValue* dict = new base::DictionaryValue();
   dict->SetString("hostname", *hostname);
   dict->SetInteger("query_type", qtype);
   return dict;
@@ -100,7 +100,7 @@ class DnsAttempt {
   Value* NetLogResponseCallback(NetLog::LogLevel log_level) const {
     DCHECK(GetResponse()->IsValid());
 
-    DictionaryValue* dict = new DictionaryValue();
+    base::DictionaryValue* dict = new base::DictionaryValue();
     dict->SetInteger("rcode", GetResponse()->rcode());
     dict->SetInteger("answer_count", GetResponse()->answer_count());
     GetSocketNetLog().source().AddToEventParameters(dict);