Consolidated all the key store/load classes in the Hydrogen and Lithium

src/elements-kind.h

Index: src/elements-kind.h
diff --git a/src/elements-kind.h b/src/elements-kind.h
index 3be7711a35cadd29c4b57a596185146e8f0c5f19..cb3bb9c9e9fd354efc5f03c90528c17b2ea1ccfe 100644
--- a/src/elements-kind.h
+++ b/src/elements-kind.h
@@ -77,6 +77,7 @@ const int kElementsKindCount = LAST_ELEMENTS_KIND - FIRST_ELEMENTS_KIND + 1;
 const int kFastElementsKindCount = LAST_FAST_ELEMENTS_KIND -
     FIRST_FAST_ELEMENTS_KIND + 1;
 
+const char* ElementsKindToString(ElementsKind kind);
 void PrintElementsKind(FILE* out, ElementsKind kind);
 
 ElementsKind GetInitialFastElementsKind();
@@ -109,6 +110,13 @@ inline bool IsFastDoubleElementsKind(ElementsKind kind) {
 }
 
 
+inline bool IsDoubleOrFloatElementsKind(ElementsKind kind) {
+  return IsFastDoubleElementsKind(kind) ||
+      kind == EXTERNAL_DOUBLE_ELEMENTS ||
+      kind == EXTERNAL_FLOAT_ELEMENTS;
+}
+
+
 inline bool IsFastSmiOrObjectElementsKind(ElementsKind kind) {
   return kind == FAST_SMI_ELEMENTS ||
       kind == FAST_HOLEY_SMI_ELEMENTS ||