Generalize map dependent codes array to allow multiple dependency groups.

src/lithium.cc

Index: src/lithium.cc
diff --git a/src/lithium.cc b/src/lithium.cc
index ff5af7f31e81df3c7e8e7405716236db16e27f16..06f59ee471d4cd800ea52ca73ad597ca977b49b0 100644
--- a/src/lithium.cc
+++ b/src/lithium.cc
@@ -472,7 +472,7 @@ void LChunk::RegisterDependentCodeForEmbeddedMaps(Handle<Code> code) {
   NoWeakEmbeddedMapsVerificationScope disable_verification_of_embedded_maps;
 #endif
   for (int i = 0; i < maps.length(); i++) {
-    maps.at(i)->AddDependentCode(code);
+    maps.at(i)->AddDependentCode(DependentCodes::kWeaklyEmbeddedGroup, code);
   }
 }