PPC: Build ObjectLiteral constant properties in the numbering phase.

Port 450002f3

Original commit message:
It's necessary to do this in order to know how many type feedback vector slots
we should allocate for the object literal.

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1166473004

Cr-Commit-Position: refs/heads/master@{#28764}

src/ppc/full-codegen-ppc.cc

@@ -1614,7 +1614,6 @@ void FullCodeGenerator::EmitAccessor(Expression* expression) {
 void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
   Comment cmnt(masm_, "[ ObjectLiteral");
 
-  expr->BuildConstantProperties(isolate());
   Handle<FixedArray> constant_properties = expr->constant_properties();
   __ LoadP(r6, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset));
   __ LoadP(r6, FieldMemOperand(r6, JSFunction::kLiteralsOffset));