Return MaybeHandle from SetElement and DeleteElement.

test/cctest/test-parsing.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1233 matching lines @@
   i::Factory* factory = isolate->factory();
   const char* message = data->BuildMessage();
   i::Handle<i::String> format = v8::Utils::OpenHandle(
       *v8::String::NewFromUtf8(CcTest::isolate(), message));
   i::Vector<const char*> args = data->BuildArgs();
   i::Handle<i::JSArray> args_array = factory->NewJSArray(args.length());
   for (int i = 0; i < args.length(); i++) {
     i::JSArray::SetElement(
         args_array, i, v8::Utils::OpenHandle(*v8::String::NewFromUtf8(
                                                   CcTest::isolate(), args[i])),
-        NONE, i::SLOPPY);
+        NONE, i::SLOPPY).Check();
   }
   i::Handle<i::JSObject> builtins(isolate->js_builtins_object());
   i::Handle<i::Object> format_fun =
       i::GetProperty(builtins, "FormatMessage");
   i::Handle<i::Object> arg_handles[] = { format, args_array };
   bool has_exception = false;
   i::Handle<i::Object> result = i::Execution::Call(
       isolate, format_fun, builtins, 2, arg_handles, &has_exception);
   CHECK(!has_exception);
   CHECK(result->IsString());
@@ skipping 1305 matching lines @@
   RunParserSyncTest(assignment_context_data, bad_statement_data_common, kError);
   RunParserSyncTest(assignment_context_data, bad_statement_data_for_assignment,
                     kError);
 
   RunParserSyncTest(prefix_context_data, good_statement_data, kSuccess);
   RunParserSyncTest(prefix_context_data, bad_statement_data_common, kError);
 
   RunParserSyncTest(postfix_context_data, good_statement_data, kSuccess);
   RunParserSyncTest(postfix_context_data, bad_statement_data_common, kError);
 }