Add new Float32x4 type for SIMD.js.

test/cctest/cctest.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 75 matching lines @@
   EXTENSION_LIST(DEFINE_EXTENSION_FLAG)
 #undef DEFINE_EXTENSION_FLAG
 
 
 // Use this to expose protected methods in i::Heap.
 class TestHeap : public i::Heap {
  public:
   using i::Heap::AllocateByteArray;
   using i::Heap::AllocateFixedArray;
   using i::Heap::AllocateHeapNumber;
+  using i::Heap::AllocateFloat32x4;
   using i::Heap::AllocateJSObject;
   using i::Heap::AllocateJSObjectFromMap;
   using i::Heap::AllocateMap;
   using i::Heap::CopyCode;
   using i::Heap::kInitialNumberStringCacheSize;
 };
 
 
 class CcTest {
  public:
@@ skipping 510 matching lines @@
   HandleAndZoneScope() {}
 
   // Prefixing the below with main_ reduces a lot of naming clashes.
   i::Zone* main_zone() { return &main_zone_; }
 
  private:
   i::Zone main_zone_;
 };
 
 #endif  // ifndef CCTEST_H_