Change scanner buffers to not use utf-8.

src/utils.h

 // Copyright 2006-2008 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 512 matching lines @@
     T* position = current_chunk_.start() + index_;
     index_ += size;
     size_ += size;
     for (int i = 0; i < size; i++) {
       position[i] = initial_value;
     }
     return Vector<T>(position, size);
   }
 
 
+  // Add a contiguous block of elements and return a vector backed
+  // by the added block.
+  // A basic Collector will keep this vector valid as long as the Collector
+  // is alive.
+  inline Vector<T> AddBlock(Vector<const T> source) {
+    if (source.length() > current_chunk_.length() - index_) {
+      Grow(source.length());
+    }
+    T* position = current_chunk_.start() + index_;
+    index_ += source.length();
+    size_ += source.length();
+    for (int i = 0; i < source.length(); i++) {
+      position[i] = source[i];
+    }
+    return Vector<T>(position, source.length());
+  }
+
+
   // Write the contents of the collector into the provided vector.
   void WriteTo(Vector<T> destination) {
     ASSERT(size_ <= destination.length());
     int position = 0;
     for (int i = 0; i < chunks_.length(); i++) {
       Vector<T> chunk = chunks_.at(i);
       for (int j = 0; j < chunk.length(); j++) {
         destination[position] = chunk[j];
         position++;
       }
@@ skipping 211 matching lines @@
 }
 
 template <class Dest, class Source>
 inline Dest BitCast(Source* source) {
   return BitCast<Dest>(reinterpret_cast<uintptr_t>(source));
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_UTILS_H_