Iterate over PcDescriptors only via iterators, not via an index. (preparation for more compression …

runtime/vm/debugger_ia32.cc

Index: runtime/vm/debugger_ia32.cc
===================================================================
--- runtime/vm/debugger_ia32.cc	(revision 38030)
+++ runtime/vm/debugger_ia32.cc	(working copy)
@@ -49,10 +49,10 @@
   {
     WritableInstructionsScope writable(instrs.EntryPoint(), instrs.size());
     switch (breakpoint_kind_) {
-      case PcDescriptors::kIcCall:
-      case PcDescriptors::kUnoptStaticCall:
-      case PcDescriptors::kRuntimeCall:
-      case PcDescriptors::kClosureCall: {
+      case RawPcDescriptors::kIcCall:
+      case RawPcDescriptors::kUnoptStaticCall:
+      case RawPcDescriptors::kRuntimeCall:
+      case RawPcDescriptors::kClosureCall: {
         saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code);
         CodePatcher::PatchStaticCallAt(pc_, code,
                                        StubCode::BreakpointRuntimeEntryPoint());
@@ -73,10 +73,10 @@
   {
     WritableInstructionsScope writable(instrs.EntryPoint(), instrs.size());
     switch (breakpoint_kind_) {
-      case PcDescriptors::kIcCall:
-      case PcDescriptors::kUnoptStaticCall:
-      case PcDescriptors::kClosureCall:
-      case PcDescriptors::kRuntimeCall: {
+      case RawPcDescriptors::kIcCall:
+      case RawPcDescriptors::kUnoptStaticCall:
+      case RawPcDescriptors::kClosureCall:
+      case RawPcDescriptors::kRuntimeCall: {
         CodePatcher::PatchStaticCallAt(pc_, code, saved_value_);
         break;
       }