Removed some unsafe uses of StringShape....

src/compiler.cc

 // 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 191 matching lines @@
     }
   }
 
   return result;
 }
 
 
 Handle<JSFunction> Compiler::CompileEval(Handle<String> source,
                                          int line_offset,
                                          bool is_global) {
-  StringShape source_shape(*source);
-  int source_length = source->length(source_shape);
+  int source_length = source->length();
   Counters::total_eval_size.Increment(source_length);
   Counters::total_compile_size.Increment(source_length);
 
   // The VM is in the COMPILER state until exiting this function.
   VMState state(COMPILER);
   CompilationCache::Entry entry = is_global
       ? CompilationCache::EVAL_GLOBAL
       : CompilationCache::EVAL_CONTEXTUAL;
 
   // Do a lookup in the compilation cache; if the entry is not there,
@@ skipping 67 matching lines @@
   // Set the expected number of properties for instances.
   SetExpectedNofPropertiesFromEstimate(shared, lit->expected_property_count());
 
   // Check the function has compiled code.
   ASSERT(shared->is_compiled());
   return true;
 }
 
 
 } }  // namespace v8::internal