[ic] Support data handlers that represent loads from prototypes.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index c509fe86c9231f92b025ee59791bfeccd07de4af..8e09e04ef0d70f5bcac2c1afc7a95ea71c3ea0ce 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -951,6 +951,13 @@ void PrototypeInfo::PrototypeInfoVerify() {
   CHECK(validity_cell()->IsCell() || validity_cell()->IsSmi());
 }
 
+void Tuple3::Tuple3Verify() {
+  CHECK(IsTuple3());
+  VerifyObjectField(kValue1Offset);
+  VerifyObjectField(kValue2Offset);
+  VerifyObjectField(kValue3Offset);
+}
+
 void ContextExtension::ContextExtensionVerify() {
   CHECK(IsContextExtension());
   VerifyObjectField(kScopeInfoOffset);