Set inferred name of bound function to empty string.

Otherwise it's whatever the js minifier assigns it to.

R=jkummerow@chromium.org
BUG=chromium:484077
LOG=N

Review URL: https://codereview.chromium.org/1122733002

Cr-Commit-Position: refs/heads/master@{#28190}

src/runtime/runtime-function.cc

@@ -407,6 +407,7 @@ RUNTIME_FUNCTION(Runtime_FunctionBindArguments) {
 
   // TODO(lrn): Create bound function in C++ code from premade shared info.
   bound_function->shared()->set_bound(true);
+  bound_function->shared()->set_inferred_name(isolate->heap()->empty_string());
   // Get all arguments of calling function (Function.prototype.bind).
   int argc = 0;
   SmartArrayPointer<Handle<Object> > arguments =

test/mjsunit/regress/regress-crbug-484077.js

+// Copyright 2015 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.
+
+// Flags: --allow-natives-syntax
+
+assertEquals("", %FunctionGetInferredName((function(){}).bind({})));