NewError no longer returns a MaybeObject.

src/json-parser.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_JSON_PARSER_H_
 #define V8_JSON_PARSER_H_
 
 #include "src/v8.h"
 
 #include "src/char-predicates-inl.h"
@@ skipping 226 matching lines @@
         Handle<Object> name = factory->LookupSingleCharacterStringFromCode(c0_);
         Handle<FixedArray> element = factory->NewFixedArray(1);
         element->set(0, *name);
         array = factory->NewJSArrayWithElements(element);
         break;
     }
 
     MessageLocation location(factory->NewScript(source_),
                              position_,
                              position_ + 1);
-    Handle<Object> error;
-    ASSIGN_RETURN_ON_EXCEPTION(isolate(), error,
-                               factory->NewSyntaxError(message, array), Object);
+    Handle<Object> error = factory->NewSyntaxError(message, array);
     return isolate()->template Throw<Object>(error, &location);
   }
   return result;
 }
 
 
 // Parse any JSON value.
 template <bool seq_one_byte>
 Handle<Object> JsonParser<seq_one_byte>::ParseJsonValue() {
   StackLimitCheck stack_check(isolate_);
@@ skipping 548 matching lines @@
 
   DCHECK_EQ('"', c0_);
   // Advance past the last '"'.
   AdvanceSkipWhitespace();
   return result;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_JSON_PARSER_H_