Implement in-heap backing store for typed arrays.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index c10111aaa1ea93ff77c032717a28bedc2116da49..c3dd8d1887ef6630a0aa6e478b8df7f911ad88e1 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -537,7 +537,7 @@ Handle<ExternalArray> Factory::NewExternalArray(int length,
                                                 ExternalArrayType array_type,
                                                 void* external_pointer,
                                                 PretenureFlag pretenure) {
-  ASSERT(0 <= length);
+  ASSERT(0 <= length && length <= Smi::kMaxValue);
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateExternalArray(length,
@@ -548,6 +548,20 @@ Handle<ExternalArray> Factory::NewExternalArray(int length,
 }
 
 
+Handle<FixedTypedArrayBase> Factory::NewFixedTypedArray(
+    int length,
+    ExternalArrayType array_type,
+    PretenureFlag pretenure) {
+  ASSERT(0 <= length && length <= Smi::kMaxValue);
+  CALL_HEAP_FUNCTION(
+      isolate(),
+      isolate()->heap()->AllocateFixedTypedArray(length,
+                                                 array_type,
+                                                 pretenure),
+      FixedTypedArrayBase);
+}
+
+
 Handle<Cell> Factory::NewCell(Handle<Object> value) {
   AllowDeferredHandleDereference convert_to_cell;
   CALL_HEAP_FUNCTION(