VM: More abstract interface for generating stub calls.

runtime/vm/debugger_x64.cc

Index: runtime/vm/debugger_x64.cc
diff --git a/runtime/vm/debugger_x64.cc b/runtime/vm/debugger_x64.cc
index c3d2495c35e87b609b7ce16e371df3e11b3c64b6..531876d8c4ae11be6a8d74464240c3548962a0c9 100644
--- a/runtime/vm/debugger_x64.cc
+++ b/runtime/vm/debugger_x64.cc
@@ -26,10 +26,10 @@ void CodeBreakpoint::PatchCode() {
   switch (breakpoint_kind_) {
     case RawPcDescriptors::kIcCall:
     case RawPcDescriptors::kUnoptStaticCall:
-      stub_target = StubCode::ICCallBreakpointEntryPoint();
+      stub_target = StubCode::ICCallBreakpoint_entry()->EntryPoint();
       break;
     case RawPcDescriptors::kRuntimeCall:
-      stub_target = StubCode::RuntimeCallBreakpointEntryPoint();
+      stub_target = StubCode::RuntimeCallBreakpoint_entry()->EntryPoint();
       break;
     default:
       UNREACHABLE();