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

runtime/vm/flow_graph_inliner.cc

Index: runtime/vm/flow_graph_inliner.cc
diff --git a/runtime/vm/flow_graph_inliner.cc b/runtime/vm/flow_graph_inliner.cc
index b5063f899d1e8ad245a70bab8a5af522d16385fd..65c37415495fe331a2acc600cf65aca6347e4dc5 100644
--- a/runtime/vm/flow_graph_inliner.cc
+++ b/runtime/vm/flow_graph_inliner.cc
@@ -796,12 +796,9 @@ class CallSiteInliner : public ValueObject {
             new (Z) InlineExitCollector(caller_graph_, call);
         FlowGraph* callee_graph;
         if (UseKernelFrontEndFor(parsed_function)) {
-          kernel::TreeNode* node = static_cast<kernel::TreeNode*>(
-              parsed_function->function().kernel_function());
-
           kernel::FlowGraphBuilder builder(
-              node, parsed_function, *ic_data_array,
-              /* not building var desc */ NULL, exit_collector,
+              parsed_function->function().kernel_offset(), parsed_function,
+              *ic_data_array, /* not building var desc */ NULL, exit_collector,
               Compiler::kNoOSRDeoptId, caller_graph_->max_block_id() + 1);
           {
             CSTAT_TIMER_SCOPE(thread(), graphinliner_build_timer);