Expose SIMD.Float32x4 type to Javascript.

src/heap/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 206 matching lines @@
   V(proto_string, "__proto__")                                 \
   V(arguments_string, "arguments")                             \
   V(Arguments_string, "Arguments")                             \
   V(caller_string, "caller")                                   \
   V(boolean_string, "boolean")                                 \
   V(Boolean_string, "Boolean")                                 \
   V(callee_string, "callee")                                   \
   V(constructor_string, "constructor")                         \
   V(dot_result_string, ".result")                              \
   V(eval_string, "eval")                                       \
+  V(float32x4_string, "float32x4")                             \
+  V(Float32x4_string, "Float32x4")                             \
   V(function_string, "function")                               \
   V(Function_string, "Function")                               \
   V(length_string, "length")                                   \
   V(name_string, "name")                                       \
   V(null_string, "null")                                       \
   V(number_string, "number")                                   \
   V(Number_string, "Number")                                   \
   V(nan_string, "NaN")                                         \
   V(source_string, "source")                                   \
   V(source_url_string, "source_url")                           \
@@ skipping 2630 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_