[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 afde76404e1dc071547081a79840a66782577420..47d0b0c842a3be9b19c432a07ec4d0cddcc7ccc4 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -967,6 +967,13 @@ 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);