Test that TypedArray methods don't read length

Test that TypedArray methods don't read length

ES6 specifies that methods on TypedArrays reference an internal length
slot, rather than their length property. This patch tests that for the
TypedArray methods that exist currently.

R=arv@chromium.org
BUG=v8:3578
LOG=Y

Committed: https://crrev.com/85c91f639e6779b1e5b19b1766bc64ccbe9f00dc
Cr-Commit-Position: refs/heads/master@{#28409}

[arv (Not doing code reviews), 2015-05-15 00:25:48]

LGTM

https://codereview.chromium.org/1130413010/diff/1/test/mjsunit/harmony/typeda...
File test/mjsunit/harmony/typedarray-fill.js (right):

https://codereview.chromium.org/1130413010/diff/1/test/mjsunit/harmony/typeda...
test/mjsunit/harmony/typedarray-fill.js:42: Object.defineProperty(a, 'length',
{value: 1});
or

get: function() { assertUnreachable(); }

[dehrenberg, 2015-05-15 01:40:41]

https://codereview.chromium.org/1130413010/diff/1/test/mjsunit/harmony/typeda...
File test/mjsunit/harmony/typedarray-fill.js (right):

https://codereview.chromium.org/1130413010/diff/1/test/mjsunit/harmony/typeda...
test/mjsunit/harmony/typedarray-fill.js:42: Object.defineProperty(a, 'length',
{value: 1});
On 2015/05/15 00:25:47, arv wrote:
> or
> 
> get: function() { assertUnreachable(); }

well, later down I validate the test by making it get reached by
Array.prototype.fill, so not sure if that would really work the way it's
written.

[dehrenberg, 2015-05-15 01:40:49]

The CQ bit was checked by dehrenberg@chromium.org

[commit-bot: I haz the power, 2015-05-15 01:41:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1130413010/1

[commit-bot: I haz the power, 2015-05-15 02:03:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-15 02:04:12]

Patchset 1 (id:??) landed as
https://crrev.com/85c91f639e6779b1e5b19b1766bc64ccbe9f00dc
Cr-Commit-Position: refs/heads/master@{#28409}