Remove unused dot_for and dot_result strings from heap.h

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 "src/allocation.h"
@@ skipping 191 matching lines @@
 #define INTERNALIZED_STRING_LIST(V)                        \
   V(Object_string, "Object")                               \
   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(dot_for_string, ".for.")                               \
   V(eval_string, "eval")                                   \
   V(empty_string, "")                                      \
   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")                                     \
@@ skipping 2331 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_