Revert of Revert of Always optimize for adding properties to native o…

…bjects. (patchset #1 id:1 of https://codereview.chromium.org/1098223004/)

Reason for revert:
Test failure was not due to this.

Original issue's description:
> Revert of Always optimize for adding properties to native objects. (patchset #1 id:1 of https://codereview.chromium.org/1094383004/)
>
> Reason for revert:
> GC stress failure (custom snapshot)
>
> Original issue's description:
> > Always optimize for adding properties to native objects.
> >
> > R=jkummerow@chromium.org
> >
> > Committed: https://crrev.com/c715098e85b93def76c0b3f54290c811dea04f01
> > Cr-Commit-Position: refs/heads/master@{#28003}
>
> TBR=jkummerow@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/bb6958ceff221e66adbc4581471a8ce1b41a4684
> Cr-Commit-Position: refs/heads/master@{#28009}

TBR=jkummerow@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1100123002

Cr-Commit-Position: refs/heads/master@{#28011}

src/v8natives.js

@@ -17,9 +17,7 @@ var $isFinite = GlobalIsFinite;
 
 // Helper function used to install functions on objects.
 function InstallFunctions(object, attributes, functions) {
-  if (functions.length >= 8) {
-    %OptimizeObjectForAddingMultipleProperties(object, functions.length >> 1);
-  }
+  %OptimizeObjectForAddingMultipleProperties(object, functions.length >> 1);
   for (var i = 0; i < functions.length; i += 2) {
     var key = functions[i];
     var f = functions[i + 1];
@@ -69,9 +67,7 @@ function InstallGetterSetter(object, name, getter, setter) {
 
 // Helper function for installing constant properties on objects.
 function InstallConstants(object, constants) {
-  if (constants.length >= 4) {
-    %OptimizeObjectForAddingMultipleProperties(object, constants.length >> 1);
-  }
+  %OptimizeObjectForAddingMultipleProperties(object, constants.length >> 1);
   var attributes = DONT_ENUM | DONT_DELETE | READ_ONLY;
   for (var i = 0; i < constants.length; i += 2) {
     var name = constants[i];