Reland: change most cases of variable redeclaration from TypeError to SyntaxError.

test/test262/test262.status

 # Copyright 2011 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 245 matching lines @@
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=896
   'language/literals/regexp/early-err-pattern': [FAIL],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=4628
   'language/eval-code/direct/non-definable-function-with-function': [FAIL],
   'language/eval-code/direct/non-definable-function-with-variable': [FAIL],
   'language/eval-code/indirect/non-definable-function-with-function': [FAIL],
   'language/eval-code/indirect/non-definable-function-with-variable': [FAIL],
 
-  # https://bugs.chromium.org/p/v8/issues/detail?id=4955
-  'language/eval-code/direct/var-env-global-lex-non-strict': [FAIL],
-  'language/eval-code/direct/var-env-lower-lex-non-strict': [FAIL],
-  'language/eval-code/indirect/var-env-global-lex-non-strict': [FAIL],
-
   # https://bugs.chromium.org/p/v8/issues/detail?id=4124
   'built-ins/Simd/*': [SKIP],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=4958
   'built-ins/Function/prototype/toString/Function': [FAIL],
   'built-ins/Function/prototype/toString/GeneratorFunction': [FAIL],
   'built-ins/Function/prototype/toString/function-declaration': [FAIL],
   'built-ins/Function/prototype/toString/function-declaration-non-simple-parameter-list': [FAIL],
   'built-ins/Function/prototype/toString/function-expression': [FAIL],
   'built-ins/Function/prototype/toString/generator-function-declaration': [FAIL],
@@ skipping 146 matching lines @@
   'built-ins/Promise/prototype/then/deferred-is-resolved-value': [SKIP],
 }],  # asan == True
 
 ['asan == True or msan == True or tsan == True', {
   # https://bugs.chromium.org/p/v8/issues/detail?id=4639
   # The failed allocation causes an asan/msan/tsan error
   'built-ins/ArrayBuffer/allocation-limit': [SKIP],
 }],  # asan == True or msan == True or tsan == True
 
 ]