[runtime] Rename IsPropertyEnumerable to PropertyIsEnumerable conforming to the spec.

BUG=

Review URL: https://codereview.chromium.org/1491613002

Cr-Commit-Position: refs/heads/master@{#32513}

src/js/v8natives.js

@@ -200,7 +200,7 @@ function ObjectIsPrototypeOf(V) {
 // ES6 19.1.3.4
 function ObjectPropertyIsEnumerable(V) {
   var P = TO_NAME(V);
-  return %IsPropertyEnumerable(TO_OBJECT(this), P);
+  return %PropertyIsEnumerable(TO_OBJECT(this), P);
 }
 
 
@@ -1177,7 +1177,7 @@ function ObjectAssign(target, sources) {
 
     for (var j = 0; j < len; ++j) {
       var key = keys[j];
-      if (%IsPropertyEnumerable(from, key)) {
+      if (%PropertyIsEnumerable(from, key)) {
         var propValue = from[key];
         to[key] = propValue;
       }

src/runtime/runtime-object.cc

@@ -756,7 +756,7 @@ RUNTIME_FUNCTION(Runtime_HasProperty) {
 }
 
 
-RUNTIME_FUNCTION(Runtime_IsPropertyEnumerable) {
+RUNTIME_FUNCTION(Runtime_PropertyIsEnumerable) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
 

src/runtime/runtime.h

@@ -450,7 +450,7 @@ namespace internal {
   F(DeleteProperty_Strict, 2, 1)                     \
   F(HasOwnProperty, 2, 1)                            \
   F(HasProperty, 2, 1)                               \
-  F(IsPropertyEnumerable, 2, 1)                      \
+  F(PropertyIsEnumerable, 2, 1)                      \
   F(GetPropertyNamesFast, 1, 1)                      \
   F(GetOwnPropertyNames, 2, 1)                       \
   F(GetOwnElementNames, 1, 1)                        \

test/cctest/test-api.cc

@@ -9179,7 +9179,7 @@ THREADED_TEST(CrossDomainDelete) {
 }
 
 
-THREADED_TEST(CrossDomainIsPropertyEnumerable) {
+THREADED_TEST(CrossDomainPropertyIsEnumerable) {
   LocalContext env1;
   v8::HandleScope handle_scope(env1->GetIsolate());
   v8::Local<Context> env2 = Context::New(env1->GetIsolate());
@@ -21008,7 +21008,7 @@ TEST(AccessCheckThrows) {
   CheckCorrectThrow("%DeleteProperty_Strict(other, '1')");
   CheckCorrectThrow("%HasOwnProperty(other, 'x')");
   CheckCorrectThrow("%HasProperty('x', other)");
-  CheckCorrectThrow("%IsPropertyEnumerable(other, 'x')");
+  CheckCorrectThrow("%PropertyIsEnumerable(other, 'x')");
   // PROPERTY_ATTRIBUTES_NONE = 0
   CheckCorrectThrow("%DefineAccessorPropertyUnchecked("
                         "other, 'x', null, null, 1)");