Merge revisions 3777-3813 from bleding_edge to partial snapshots ...

src/code-stubs.cc

Index: src/code-stubs.cc
===================================================================
--- src/code-stubs.cc	(revision 3890)
+++ src/code-stubs.cc	(working copy)
@@ -149,13 +149,16 @@
 }
 
 
-const char* CodeStub::MajorName(CodeStub::Major major_key) {
+const char* CodeStub::MajorName(CodeStub::Major major_key,
+                                bool allow_unknown_keys) {
   switch (major_key) {
 #define DEF_CASE(name) case name: return #name;
     CODE_STUB_LIST(DEF_CASE)
 #undef DEF_CASE
     default:
-      UNREACHABLE();
+      if (!allow_unknown_keys) {
+        UNREACHABLE();
+      }
       return NULL;
   }
 }