Reland of "Remove ExternalArray, derived types, and element kinds"

src/elements.cc

Index: src/elements.cc
diff --git a/src/elements.cc b/src/elements.cc
index d1ddc8dc481a6778c878e05229344bef86bd22b5..7ef13b30dedc38511410ef9a5bfb91cdd0297f4b 100644
--- a/src/elements.cc
+++ b/src/elements.cc
@@ -27,15 +27,6 @@
 //       - FastPackedDoubleElementsAccessor
 //       - FastHoleyDoubleElementsAccessor
 //   - TypedElementsAccessor: template, with instantiations:
-//     - ExternalInt8ElementsAccessor
-//     - ExternalUint8ElementsAccessor
-//     - ExternalInt16ElementsAccessor
-//     - ExternalUint16ElementsAccessor
-//     - ExternalInt32ElementsAccessor
-//     - ExternalUint32ElementsAccessor
-//     - ExternalFloat32ElementsAccessor
-//     - ExternalFloat64ElementsAccessor
-//     - ExternalUint8ClampedElementsAccessor
 //     - FixedUint8ElementsAccessor
 //     - FixedInt8ElementsAccessor
 //     - FixedUint16ElementsAccessor
@@ -79,23 +70,6 @@ static const int kPackedSizeNotKnown = -1;
     FixedArray)                                                               \
   V(SlowSloppyArgumentsElementsAccessor, SLOW_SLOPPY_ARGUMENTS_ELEMENTS,      \
     FixedArray)                                                               \
-  V(ExternalInt8ElementsAccessor, EXTERNAL_INT8_ELEMENTS, ExternalInt8Array)  \
-  V(ExternalUint8ElementsAccessor, EXTERNAL_UINT8_ELEMENTS,                   \
-    ExternalUint8Array)                                                       \
-  V(ExternalInt16ElementsAccessor, EXTERNAL_INT16_ELEMENTS,                   \
-    ExternalInt16Array)                                                       \
-  V(ExternalUint16ElementsAccessor, EXTERNAL_UINT16_ELEMENTS,                 \
-    ExternalUint16Array)                                                      \
-  V(ExternalInt32ElementsAccessor, EXTERNAL_INT32_ELEMENTS,                   \
-    ExternalInt32Array)                                                       \
-  V(ExternalUint32ElementsAccessor, EXTERNAL_UINT32_ELEMENTS,                 \
-    ExternalUint32Array)                                                      \
-  V(ExternalFloat32ElementsAccessor, EXTERNAL_FLOAT32_ELEMENTS,               \
-    ExternalFloat32Array)                                                     \
-  V(ExternalFloat64ElementsAccessor, EXTERNAL_FLOAT64_ELEMENTS,               \
-    ExternalFloat64Array)                                                     \
-  V(ExternalUint8ClampedElementsAccessor, EXTERNAL_UINT8_CLAMPED_ELEMENTS,    \
-    ExternalUint8ClampedArray)                                                \
   V(FixedUint8ElementsAccessor, UINT8_ELEMENTS, FixedUint8Array)              \
   V(FixedInt8ElementsAccessor, INT8_ELEMENTS, FixedInt8Array)                 \
   V(FixedUint16ElementsAccessor, UINT16_ELEMENTS, FixedUint16Array)           \
@@ -1218,7 +1192,6 @@ class FastSmiOrObjectElementsAccessor
       case SLOW_SLOPPY_ARGUMENTS_ELEMENTS:
         UNREACHABLE();
 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size)                       \
-      case EXTERNAL_##TYPE##_ELEMENTS:                                        \
       case TYPE##_ELEMENTS:                                                   \
         UNREACHABLE();
       TYPED_ARRAYS(TYPED_ARRAY_CASE)
@@ -1315,7 +1288,6 @@ class FastDoubleElementsAccessor
         UNREACHABLE();
 
 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size)                       \
-      case EXTERNAL_##TYPE##_ELEMENTS:                                        \
       case TYPE##_ELEMENTS:                                                   \
         UNREACHABLE();
       TYPED_ARRAYS(TYPED_ARRAY_CASE)
@@ -1406,13 +1378,6 @@ class TypedElementsAccessor
 
 
 
-#define EXTERNAL_ELEMENTS_ACCESSOR(Type, type, TYPE, ctype, size)    \
-  typedef TypedElementsAccessor<EXTERNAL_##TYPE##_ELEMENTS>          \
-      External##Type##ElementsAccessor;
-
-TYPED_ARRAYS(EXTERNAL_ELEMENTS_ACCESSOR)
-#undef EXTERNAL_ELEMENTS_ACCESSOR
-
 #define FIXED_ELEMENTS_ACCESSOR(Type, type, TYPE, ctype, size)       \
   typedef TypedElementsAccessor<TYPE##_ELEMENTS >                    \
       Fixed##Type##ElementsAccessor;