Store both major and minor key on code stubs.

src/heap-snapshot-generator.cc

Index: src/heap-snapshot-generator.cc
diff --git a/src/heap-snapshot-generator.cc b/src/heap-snapshot-generator.cc
index b2bfa867a261c60a3d2afdd3c7b6925ac6655f11..13e5924745e95a9e406bb93dfaeb36641e9c95ff 100644
--- a/src/heap-snapshot-generator.cc
+++ b/src/heap-snapshot-generator.cc
@@ -1499,8 +1499,8 @@ void V8HeapExplorer::TagBuiltinCodeObject(Code* code, const char* name) {
 void V8HeapExplorer::TagCodeObject(Code* code) {
   if (code->kind() == Code::STUB) {
     TagObject(code, names_->GetFormatted(
-        "(%s code)", CodeStub::MajorName(
-            static_cast<CodeStub::Major>(code->major_key()), true)));
+                        "(%s code)", CodeStub::MajorName(

[Jakob Kummerow, 2014/07/21 12:23:19]

nit: consider pulling out a temp variable or two to make indentation a bit less
ugly. (But we can also leave it as is if it doesn't bother you; clang-format is
always right.)

+                                         CodeStub::GetMajorKey(code), true)));
   }
 }