Revert of making heap verification more aggressive

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 48118fc78e19e35d7f4561c126c3b1df8ae6add5..4140159f9312ffb8ce5c83fa4a536997c99fd8cf 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -1647,29 +1647,19 @@
   Handle<FixedArrayBase> elms;
   ElementsKind elements_kind = array->GetElementsKind();
   if (IsFastDoubleElementsKind(elements_kind)) {
-    switch (mode) {
-      case DONT_INITIALIZE_ARRAY_ELEMENTS:
-        elms = NewFixedDoubleArray(capacity);
-        break;
-      case INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE:
-        elms = NewFixedDoubleArrayWithHoles(capacity);
-        break;
-      case INITIALIZE_ARRAY_ELEMENTS_WITH_UNDEFINED:
-        UNREACHABLE();
-        break;
+    if (mode == DONT_INITIALIZE_ARRAY_ELEMENTS) {
+      elms = NewFixedDoubleArray(capacity);
+    } else {
+      DCHECK(mode == INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE);
+      elms = NewFixedDoubleArrayWithHoles(capacity);
     }
   } else {
     DCHECK(IsFastSmiOrObjectElementsKind(elements_kind));
-    switch (mode) {
-      case DONT_INITIALIZE_ARRAY_ELEMENTS:
-        elms = NewUninitializedFixedArray(capacity);
-        break;
-      case INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE:
-        elms = NewFixedArrayWithHoles(capacity);
-        break;
-      case INITIALIZE_ARRAY_ELEMENTS_WITH_UNDEFINED:
-        elms = NewFixedArray(capacity);
-        break;
+    if (mode == DONT_INITIALIZE_ARRAY_ELEMENTS) {
+      elms = NewUninitializedFixedArray(capacity);
+    } else {
+      DCHECK(mode == INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE);
+      elms = NewFixedArrayWithHoles(capacity);
     }
   }