[heap] Remove raw unchecked root set accessors.

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 1159 matching lines @@
   inline Isolate* isolate();
 
   MarkCompactCollector* mark_compact_collector() {
     return &mark_compact_collector_;
   }
 
   // ===========================================================================
   // Root set access. ==========================================================
   // ===========================================================================
 
-  // Heap root getters.  We have versions with and without type::cast() here.
-  // You can't use type::cast during GC because the assert fails.
-  // TODO(1490): Try removing the unchecked accessors, now that GC marking does
-  // not corrupt the map.
-#define ROOT_ACCESSOR(type, name, camel_name)                         \
-  inline type* name();                                                \
-  type* raw_unchecked_##name() {                                      \
-    return reinterpret_cast<type*>(roots_[k##camel_name##RootIndex]); \
-  }
+  // Heap root getters.
+#define ROOT_ACCESSOR(type, name, camel_name) inline type* name();
   ROOT_LIST(ROOT_ACCESSOR)
 #undef ROOT_ACCESSOR
 
   // Utility type maps.
 #define STRUCT_MAP_ACCESSOR(NAME, Name, name) inline Map* name##_map();
   STRUCT_LIST(STRUCT_MAP_ACCESSOR)
 #undef STRUCT_MAP_ACCESSOR
 
 #define STRING_ACCESSOR(name, str) inline String* name();
   INTERNALIZED_STRING_LIST(STRING_ACCESSOR)
@@ skipping 1602 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_