Revert of Certificate Transparency: Ensure timestamps over 32 bit are handled correctly.

net/cert/signed_tree_head.cc

Index: net/cert/signed_tree_head.cc
diff --git a/net/cert/signed_tree_head.cc b/net/cert/signed_tree_head.cc
index 00fc1342d65a61825446d6d8542d170e8a21724e..ef1ab708c7c9e18c5f938e58368ae3a66b719a7d 100644
--- a/net/cert/signed_tree_head.cc
+++ b/net/cert/signed_tree_head.cc
@@ -5,8 +5,6 @@
 #include "net/cert/signed_tree_head.h"
 
 #include <string.h>
-
-#include <iostream>
 
 #include "base/strings/string_number_conversions.h"
 
@@ -31,16 +29,17 @@
 
 SignedTreeHead::~SignedTreeHead() {}
 
-void PrintTo(const SignedTreeHead& sth, std::ostream* os) {
-  (*os) << "{\n"
-        << "\t\"version\": " << sth.version << ",\n"
-        << "\t\"timestamp\": " << sth.timestamp << ",\n"
-        << "\t\"tree_size\": " << sth.tree_size << ",\n"
-        << "\t\"sha256_root_hash\": \""
-        << base::HexEncode(sth.sha256_root_hash, kSthRootHashLength)
-        << "\",\n\t\"log_id\": \""
-        << base::HexEncode(sth.log_id.data(), sth.log_id.size()) << "\"\n"
-        << "}";
+std::ostream& operator<<(std::ostream& stream, const SignedTreeHead& sth) {
+  return stream << "{\n"
+                << "\t\"version\": " << sth.version << ",\n"
+                << "\t\"timestamp\": " << sth.timestamp << ",\n"
+                << "\t\"tree_size\": " << sth.tree_size << ",\n"
+                << "\t\"sha256_root_hash\": \""
+                << base::HexEncode(sth.sha256_root_hash, kSthRootHashLength)
+                << "\",\n\t\"log_id\": \""
+                << base::HexEncode(sth.log_id.data(), sth.log_id.size())
+                << "\"\n"
+                << "}";
 }
 
 }  // namespace ct