Add TYPE_INTEGER64 type to base::Value.

base/json/json_writer.cc

Index: base/json/json_writer.cc
diff --git a/base/json/json_writer.cc b/base/json/json_writer.cc
index f457331165004ebcc91226d6fbf2e26965e402df..d93e22fdb0ba9b3e5b43c145de29ea11415f9e0b 100644
--- a/base/json/json_writer.cc
+++ b/base/json/json_writer.cc
@@ -4,6 +4,8 @@
 
 #include "base/json/json_writer.h"
 
+#include "base/basictypes.h"
+#include "base/format_macros.h"
 #include "base/json/string_escape.h"
 #include "base/logging.h"
 #include "base/stringprintf.h"
@@ -78,6 +80,15 @@ void JSONWriter::BuildJSONString(const Value* const node,
         break;
       }
 
+    case Value::TYPE_INTEGER64:
+      {
+        int64 value;
+        bool result = node->GetAsInteger64(&value);
+        DCHECK(result);
+        base::StringAppendF(json_string_, "%" PRId64, value);
+        break;
+      }
+
     case Value::TYPE_DOUBLE:
       {
         double value;