[ic] [stubs] Remove InlineCacheState field from the code flags.

src/ic/ic.cc

Index: src/ic/ic.cc
diff --git a/src/ic/ic.cc b/src/ic/ic.cc
index bafaffff7eaf5cf7392eb5cf3b19d93e46f8d592..846f56124a589ee6c73fab8037c737b42a2f6fce 100644
--- a/src/ic/ic.cc
+++ b/src/ic/ic.cc
@@ -45,12 +45,6 @@ char IC::TransitionMarkFromState(IC::State state) {
       return 'N';
     case GENERIC:
       return 'G';
-
-    // We never see the debugger states here, because the state is
-    // computed from the original code - not the patched code. Let
-    // these cases fall through to the unreachable code below.
-    case DEBUG_STUB:
-      break;
   }
   UNREACHABLE();
   return 0;
@@ -359,7 +353,6 @@ static void ComputeTypeInfoCountDelta(IC::State old_state, IC::State new_state,
       }
       break;
     case RECOMPUTE_HANDLER:
-    case DEBUG_STUB:
       UNREACHABLE();
   }
 }
@@ -799,8 +792,6 @@ void IC::PatchCache(Handle<Name> name, Handle<Code> code) {
       DCHECK(UseVector());
       vector_set_ = true;
       break;
-    case DEBUG_STUB:
-      break;
     case GENERIC:
       UNREACHABLE();
       break;