Implement handlified String::Flatten.

src/liveedit.cc

 // Copyright 2012 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 564 matching lines @@
   LineEndsWrapper line_ends2_;
   Handle<String> s1_;
   Handle<String> s2_;
   int subrange_offset1_;
   int subrange_offset2_;
 };
 
 
 Handle<JSArray> LiveEdit::CompareStrings(Handle<String> s1,
                                          Handle<String> s2) {
-  s1 = FlattenGetString(s1);
-  s2 = FlattenGetString(s2);
+  s1 = String::Flatten(s1);
+  s2 = String::Flatten(s2);
 
   LineEndsWrapper line_ends1(s1);
   LineEndsWrapper line_ends2(s2);
 
   LineArrayCompareInput input(s1, s2, line_ends1, line_ends2);
   TokenizingLineArrayCompareOutput output(line_ends1, line_ends2, s1, s2);
 
   NarrowDownInput(&input, &output);
 
   Comparator::CalculateDifference(&input, &output);
@@ skipping 1405 matching lines @@
 
 bool LiveEditFunctionTracker::IsActive(Isolate* isolate) {
   return false;
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 
 } }  // namespace v8::internal