Handle retry-after-gc failures within LoadIC::Load and StoreIC::Store.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 6261c12a9756ccf6620c8fb41ab45430457a0e1b..1cb96c6bc46dfa59f9ab39af79a3bdd9850d1314 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -4043,6 +4043,14 @@ static Handle<Object> GetCharAt(Handle<String> string, uint32_t index) {
 }
 
 
+MaybeObject* Runtime::GetElementOrCharAtOrFail(Isolate* isolate,
+                                               Handle<Object> object,
+                                               uint32_t index) {
+  CALL_HEAP_FUNCTION_PASS_EXCEPTION(isolate,
+      GetElementOrCharAt(isolate, object, index));
+}
+
+
 MaybeObject* Runtime::GetElementOrCharAt(Isolate* isolate,
                                          Handle<Object> object,
                                          uint32_t index) {