Minor library function fixes for TypedArray spec compliance

test/test262/test262.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
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 #     * Redistributions of source code must retain the above copyright
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@@ skipping 245 matching lines @@
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=4727
   'built-ins/TypedArrays/length-arg-is-undefined-throws': [FAIL],
   'built-ins/TypedArrays/length-arg-is-symbol-throws': [FAIL],
   'built-ins/TypedArrays/length-arg-is-float-throws-rangeerror': [FAIL],
   'built-ins/TypedArrays/length-arg-is-nan-throws-rangeerror': [FAIL],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=4784
   'built-ins/TypedArrays/buffer-arg-defined-negative-length': [FAIL],
 
-  # https://bugs.chromium.org/p/v8/issues/detail?id=4785
-  'built-ins/TypedArray/prototype/entries/invoked-as-method': [FAIL],
-  'built-ins/TypedArray/prototype/keys/invoked-as-method': [FAIL],
-  'built-ins/TypedArray/prototype/values/invoked-as-method': [FAIL],
-  'built-ins/TypedArray/prototype/toString': [FAIL],
-
   ######################## NEEDS INVESTIGATION ###########################
 
   # These test failures are specific to the intl402 suite and need investigation
   # to be either marked as bugs with issues filed for them or as deliberate
   # incompatibilities if the test cases turn out to be broken or ambiguous.
   # Some of these are related to v8:4361 in being visible side effects from Intl.
   'intl402/6.2.3': [FAIL],
   'intl402/9.2.1_2': [FAIL],
   'intl402/9.2.6_2': [FAIL],
   'intl402/Collator/10.1.2.1_4': [FAIL],
@@ skipping 341 matching lines @@
   'language/statements/generators/yield-as-statement': [FAIL],
   'language/statements/generators/yield-as-yield-operand': [FAIL],
   'language/statements/generators/yield-newline': [FAIL],
   'language/statements/generators/yield-star-before-newline': [FAIL],
 
   # TODO(4680,rmcilroy): Test262Error: Expected a RangeError to be thrown but no exception was thrown at all
   'built-ins/Date/prototype/toISOString/15.9.5.43-0-13': [FAIL],
 }],  # ignition == True
 
 ]