Revert "[kernel] Stream everything. Replace .kernel_function with .kernel_offset"

runtime/lib/mirrors.cc

Index: runtime/lib/mirrors.cc
diff --git a/runtime/lib/mirrors.cc b/runtime/lib/mirrors.cc
index 9e2a1ddf04d455d805aa9c7c470309c8ce9f7070..54b22a663acc22976b5e623abdf19bb7dece337c 100644
--- a/runtime/lib/mirrors.cc
+++ b/runtime/lib/mirrors.cc
@@ -145,7 +145,7 @@ static RawInstance* CreateParameterMirrorList(const Function& func,
     // * Whether a parameters has been declared as final.
     // * Any metadata associated with the parameter.
     Object& result = Object::Handle();
-    if (func.kernel_offset() > 0) {
+    if (func.kernel_function() != NULL) {
       result = kernel::BuildParameterDescriptor(func);
     } else {
       result = Parser::ParseFunctionParameters(func);