Migrate error messages, part 11.

src/json-parser.h

Index: src/json-parser.h
diff --git a/src/json-parser.h b/src/json-parser.h
index 54c78414804c20ef0f48f3f539eb24bb1790ae8d..b5dc33eb5713bd521444370c5de7fbd7017c3e5e 100644
--- a/src/json-parser.h
+++ b/src/json-parser.h
@@ -213,14 +213,13 @@ MaybeHandle<Object> JsonParser<seq_one_byte>::ParseJson() {
     if (isolate_->has_pending_exception()) return Handle<Object>::null();
 
     // Parse failed. Current character is the unexpected token.
-    const char* message;
     Factory* factory = this->factory();
-    Handle<JSArray> array;
+    MessageTemplate::Template message;
+    Handle<String> argument;
 
     switch (c0_) {
       case kEndOfString:
-        message = "unexpected_eos";
-        array = factory->NewJSArray(0);
+        message = MessageTemplate::kUnexpectedEOS;
         break;
       case '-':
       case '0':
@@ -233,26 +232,21 @@ MaybeHandle<Object> JsonParser<seq_one_byte>::ParseJson() {
       case '7':
       case '8':
       case '9':
-        message = "unexpected_token_number";
-        array = factory->NewJSArray(0);
+        message = MessageTemplate::kUnexpectedTokenNumber;
         break;
       case '"':
-        message = "unexpected_token_string";
-        array = factory->NewJSArray(0);
+        message = MessageTemplate::kUnexpectedTokenString;
         break;
       default:
-        message = "unexpected_token";
-        Handle<Object> name = factory->LookupSingleCharacterStringFromCode(c0_);
-        Handle<FixedArray> element = factory->NewFixedArray(1);
-        element->set(0, *name);
-        array = factory->NewJSArrayWithElements(element);
+        message = MessageTemplate::kUnexpectedToken;
+        argument = factory->LookupSingleCharacterStringFromCode(c0_);
         break;
     }
 
     MessageLocation location(factory->NewScript(source_),
                              position_,
                              position_ + 1);
-    Handle<Object> error = factory->NewSyntaxError(message, array);
+    Handle<Object> error = factory->NewSyntaxError(message, argument);
     return isolate()->template Throw<Object>(error, &location);
   }
   return result;