Remove support for externally backed elements from the API

test/unittests/test-utils.cc

Index: test/unittests/test-utils.cc
diff --git a/test/unittests/test-utils.cc b/test/unittests/test-utils.cc
index 5d1c1f14f650c44210a7e0c123bab7bd4fecdd11..c49aac5216f27fbdd2f4fc93c920b62e29706082 100644
--- a/test/unittests/test-utils.cc
+++ b/test/unittests/test-utils.cc
@@ -10,32 +10,6 @@
 
 namespace v8 {
 
-std::ostream& operator<<(std::ostream& os, ExternalArrayType type) {
-  switch (type) {
-    case kExternalInt8Array:
-      return os << "ExternalInt8Array";
-    case kExternalUint8Array:
-      return os << "ExternalUint8Array";
-    case kExternalInt16Array:
-      return os << "ExternalInt16Array";
-    case kExternalUint16Array:
-      return os << "ExternalUint16Array";
-    case kExternalInt32Array:
-      return os << "ExternalInt32Array";
-    case kExternalUint32Array:
-      return os << "ExternalUint32Array";
-    case kExternalFloat32Array:
-      return os << "ExternalFloat32Array";
-    case kExternalFloat64Array:
-      return os << "ExternalFloat64Array";
-    case kExternalUint8ClampedArray:
-      return os << "ExternalUint8ClampedArray";
-  }
-  UNREACHABLE();
-  return os;
-}
-
-
 // static
 Isolate* TestWithIsolate::isolate_ = NULL;