ARM: Implement GetCachedArrayIndex in the lithium code generator.

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 a6635adf97e3368d04a09ed03f15399df823d2c6..fba29a69e5842f25a083cd99a2f186994055874e 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -1422,6 +1422,13 @@ LInstruction* LChunkBuilder::DoHasInstanceType(HHasInstanceType* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoGetCachedArrayIndex(
+    HGetCachedArrayIndex* instr)  {
+  Abort("Unimplemented: %s", "DoGetCachedArrayIndex");
+  return NULL;
+}
+
+
 LInstruction* LChunkBuilder::DoHasCachedArrayIndex(
     HHasCachedArrayIndex* instr) {
   Abort("Unimplemented: %s", "DoHasCachedArrayIndex");