Correctly escape RegExp source.

src/json-stringifier.h

Index: src/json-stringifier.h
diff --git a/src/json-stringifier.h b/src/json-stringifier.h
index cbceaaead79c9c1a2f4efdc80fecae95a729089b..393551dd9ad1f80b23c84d7e1a0e4afdd3e27638 100644
--- a/src/json-stringifier.h
+++ b/src/json-stringifier.h
@@ -97,9 +97,6 @@ class BasicJsonStringifier BASE_EMBEDDED {
   template <typename Char>
   INLINE(static bool DoNotEscape(Char c));
 
-  template <typename Char>
-  INLINE(static Vector<const Char> GetCharVector(Handle<String> string));
-
   Result StackPush(Handle<Object> object);
   void StackPop();
 
@@ -634,7 +631,7 @@ void BasicJsonStringifier::SerializeString_(Handle<String> string) {
   int worst_case_length = length << 3;
   if (builder_.CurrentPartCanFit(worst_case_length)) {
     DisallowHeapAllocation no_gc;
-    Vector<const SrcChar> vector = GetCharVector<SrcChar>(string);
+    Vector<const SrcChar> vector = string->GetCharVector<SrcChar>();
     IncrementalStringBuilder::NoExtendBuilder<DestChar> no_extend(
         &builder_, worst_case_length);
     SerializeStringUnchecked_(vector, &no_extend);
@@ -666,23 +663,6 @@ bool BasicJsonStringifier::DoNotEscape(uint16_t c) {
 }
 
 
-template <>
-Vector<const uint8_t> BasicJsonStringifier::GetCharVector(
-    Handle<String> string) {
-  String::FlatContent flat = string->GetFlatContent();
-  DCHECK(flat.IsOneByte());
-  return flat.ToOneByteVector();
-}
-
-
-template <>
-Vector<const uc16> BasicJsonStringifier::GetCharVector(Handle<String> string) {
-  String::FlatContent flat = string->GetFlatContent();
-  DCHECK(flat.IsTwoByte());
-  return flat.ToUC16Vector();
-}
-
-
 void BasicJsonStringifier::SerializeString(Handle<String> object) {
   object = String::Flatten(object);
   if (builder_.CurrentEncoding() == String::ONE_BYTE_ENCODING) {