RFC: Switch to ast ids (instead of positions) for type feedback.

src/handles.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 324 matching lines @@
 bool EnsureCompiled(Handle<SharedFunctionInfo> shared,
                     ClearExceptionFlag flag);
 
 bool CompileLazyShared(Handle<SharedFunctionInfo> shared,
                        ClearExceptionFlag flag);
 
 bool CompileLazy(Handle<JSFunction> function, ClearExceptionFlag flag);
 
 bool CompileLazyInLoop(Handle<JSFunction> function, ClearExceptionFlag flag);
 
-bool CompileOptimized(Handle<JSFunction> function, int osr_ast_id);
+bool CompileOptimized(Handle<JSFunction> function, AstId osr_ast_id);
 
 class NoHandleAllocation BASE_EMBEDDED {
  public:
 #ifndef DEBUG
   NoHandleAllocation() {}
   ~NoHandleAllocation() {}
 #else
   inline NoHandleAllocation();
   inline ~NoHandleAllocation();
  private:
@@ skipping 16 matching lines @@
  private:
   bool has_been_transformed_;  // Tells whether the object has been transformed.
   int unused_property_fields_;  // Captures the unused number of field.
   Handle<JSObject> object_;    // The object being optimized.
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HANDLES_H_