Submitting change from http://codereview.chromium.org/276029/show

BUG=none
TEST=none


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30778 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 8 insertions, 2 deletions

diff --git a/base/json/json_writer.cc b/base/json/json_writer.cc
index dffa3da..133b625 100644
--- a/base/json/json_writer.cc
+++ b/base/json/json_writer.cc
@@ -19,6 +19,9 @@ static const char kPrettyPrintLineEnding[] = "\n";
 #endif
 
 /* static */
+const char* JSONWriter::kEmptyArray = "[]";
+
+/* static */
 void JSONWriter::Write(const Value* const node,
                        bool pretty_print,
                        std::string* json) {
@@ -48,7 +51,7 @@ JSONWriter::JSONWriter(bool pretty_print, std::string* json)
 void JSONWriter::BuildJSONString(const Value* const node,
                                  int depth,
                                  bool escape) {
-  switch(node->GetType()) {
+  switch (node->GetType()) {
     case Value::TYPE_NULL:
       json_string_->append("null");
       break;
@@ -147,7 +150,6 @@ void JSONWriter::BuildJSONString(const Value* const node,
         for (DictionaryValue::key_iterator key_itr = dict->begin_keys();
              key_itr != dict->end_keys();
              ++key_itr) {
-
           if (key_itr != dict->begin_keys()) {
             json_string_->append(",");
             if (pretty_print_)
diff --git a/base/json/json_writer.h b/base/json/json_writer.h
index 29aa69d..0ebee0a 100644
--- a/base/json/json_writer.h
+++ b/base/json/json_writer.h
@@ -33,6 +33,10 @@ class JSONWriter {
                                       bool escape,
                                       std::string* json);
 
+  // A static, constant JSON string representing an empty array.  Useful
+  // for empty JSON argument passing.
+  static const char* kEmptyArray;
+
  private:
   JSONWriter(bool pretty_print, std::string* json);