Revert "VM: New calling convention for generated code."

runtime/vm/debugger_arm64.cc

Index: runtime/vm/debugger_arm64.cc
diff --git a/runtime/vm/debugger_arm64.cc b/runtime/vm/debugger_arm64.cc
index bf6423a38d3b15d408d09cfe2986be2d76ecea1e..8c59d245ff1e52aae8c60761c9d488fc05f56482 100644
--- a/runtime/vm/debugger_arm64.cc
+++ b/runtime/vm/debugger_arm64.cc
@@ -13,21 +13,21 @@
 
 namespace dart {
 
-RawCode* CodeBreakpoint::OrigStubAddress() const {
+uword CodeBreakpoint::OrigStubAddress() const {
   return saved_value_;
 }
 
 
 void CodeBreakpoint::PatchCode() {
   ASSERT(!is_enabled_);
-  Code& stub_target = Code::Handle();
+  uword stub_target = 0;
   switch (breakpoint_kind_) {
     case RawPcDescriptors::kIcCall:
     case RawPcDescriptors::kUnoptStaticCall:
-      stub_target = StubCode::ICCallBreakpoint_entry()->code();
+      stub_target = StubCode::ICCallBreakpoint_entry()->EntryPoint();
       break;
     case RawPcDescriptors::kRuntimeCall: {
-      stub_target = StubCode::RuntimeCallBreakpoint_entry()->code();
+      stub_target = StubCode::RuntimeCallBreakpoint_entry()->EntryPoint();
       break;
     }
     default:
@@ -47,8 +47,7 @@ void CodeBreakpoint::RestoreCode() {
     case RawPcDescriptors::kIcCall:
     case RawPcDescriptors::kUnoptStaticCall:
     case RawPcDescriptors::kRuntimeCall: {
-      CodePatcher::PatchPoolPointerCallAt(
-          pc_, code, Code::Handle(saved_value_));
+      CodePatcher::PatchPoolPointerCallAt(pc_, code, saved_value_);
       break;
     }
     default: