Remove some dead code.

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 6070 matching lines @@
     script ^= scripts.At(i);
     script_url = script.url();
     if (script_url.Equals(url)) {
       return script.raw();
     }
   }
   return Script::null();
 }
 
 
-RawFunction* Library::LookupFunctionInSource(const String& script_url,
-                                             intptr_t line_number) const {
-  Script& script = Script::Handle(LookupScript(script_url));
-  if (script.IsNull()) {
-    // The given script url is not loaded into this library.
-    return Function::null();
-  }
-
-  // Determine token position at given line number.
-  intptr_t first_token_pos, last_token_pos;
-  script.TokenRangeAtLine(line_number, &first_token_pos, &last_token_pos);
-  if (first_token_pos < 0) {
-    // Script does not contain the given line number.
-    return Function::null();
-  }
-  Function& func = Function::Handle();
-  for (intptr_t pos = first_token_pos; pos <= last_token_pos; pos++) {
-    func = LookupFunctionInScript(script, pos);
-    if (!func.IsNull()) {
-      return func.raw();
-    }
-  }
-  return Function::null();
-}
-
-
 RawFunction* Library::LookupFunctionInScript(const Script& script,
                                              intptr_t token_pos) const {
   Class& cls = Class::Handle();
   Function& func = Function::Handle();
   ClassDictionaryIterator it(*this);
   while (it.HasNext()) {
     cls = it.GetNextClass();
     if (script.raw() == cls.script()) {
       func = cls.LookupFunctionAtToken(token_pos);
       if (!func.IsNull()) {
@@ skipping 7140 matching lines @@
   }
   return result.raw();
 }
 
 
 const char* WeakProperty::ToCString() const {
   return "_WeakProperty";
 }
 
 }  // namespace dart