Defer creating Handles for HConstants to the code generation phase.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 283862c78762ca48a7fe68bd6dd6f9fa76b9900b..f970b76b4d891510f9a7d56e78930351c872574a 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -534,8 +534,8 @@ void LChunk::AddGapMove(int index, LOperand* from, LOperand* to) {
 }
 
 
-Handle<Object> LChunk::LookupLiteral(LConstantOperand* operand) const {
-  return HConstant::cast(graph_->LookupValue(operand->index()))->handle();
+HConstant* LChunk::LookupConstant(LConstantOperand* operand) const {
+  return HConstant::cast(graph_->LookupValue(operand->index()));
 }