Implement crankshaft support for nested object literals.

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index a8e29d116954d0e1d2deafe105153ffcabb62ea7..b486faec62f3aa0274df9f78ed47a563a79ab2c2 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -2071,8 +2071,14 @@ LInstruction* LChunkBuilder::DoArrayLiteral(HArrayLiteral* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoObjectLiteral(HObjectLiteral* instr) {
-  return MarkAsCall(DefineFixed(new LObjectLiteral, rax), instr);
+LInstruction* LChunkBuilder::DoObjectLiteralFast(HObjectLiteralFast* instr) {
+  return MarkAsCall(DefineFixed(new LObjectLiteralFast, rax), instr);
+}
+
+
+LInstruction* LChunkBuilder::DoObjectLiteralGeneric(
+    HObjectLiteralGeneric* instr) {
+  return MarkAsCall(DefineFixed(new LObjectLiteralGeneric, rax), instr);
 }