Get rid of dynamic call debug stub

runtime/vm/debugger_ia32.cc

Index: runtime/vm/debugger_ia32.cc
===================================================================
--- runtime/vm/debugger_ia32.cc	(revision 31928)
+++ runtime/vm/debugger_ia32.cc	(working copy)
@@ -45,14 +45,7 @@
 void CodeBreakpoint::PatchCode() {
   ASSERT(!is_enabled_);
   switch (breakpoint_kind_) {
-    case PcDescriptors::kIcCall: {
-      const Code& code =
-          Code::Handle(Function::Handle(function_).unoptimized_code());
-      saved_value_ = CodePatcher::GetInstanceCallAt(pc_, code, NULL);
-      CodePatcher::PatchInstanceCallAt(pc_, code,
-                                       StubCode::BreakpointDynamicEntryPoint());
-      break;
-    }
+    case PcDescriptors::kIcCall:
     case PcDescriptors::kUnoptStaticCall:
     case PcDescriptors::kRuntimeCall:
     case PcDescriptors::kClosureCall:
@@ -74,12 +67,7 @@
 void CodeBreakpoint::RestoreCode() {
   ASSERT(is_enabled_);
   switch (breakpoint_kind_) {
-    case PcDescriptors::kIcCall: {
-      const Code& code =
-          Code::Handle(Function::Handle(function_).unoptimized_code());
-      CodePatcher::PatchInstanceCallAt(pc_, code, saved_value_);
-      break;
-    }
+    case PcDescriptors::kIcCall:
     case PcDescriptors::kUnoptStaticCall:
     case PcDescriptors::kClosureCall:
     case PcDescriptors::kRuntimeCall: