Fix typedarray tests

Fix typedarray tests.

1. Fixed typo. lenght -> length. Arbitary -> Arbitrary.
2. TypedArray DataView property getters should throw TypeError when called on
    incompatible types.
3. Should not use integers as keys in the arbitrary-properties test.

R=dslomov@chromium.org, yangguo@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=24551

[xuq, 2014-10-13 01:51:10]

The CQ bit was checked by xuq@google.com

[xuq, 2014-10-13 01:51:14]

The CQ bit was unchecked by xuq@google.com

[xuq, 2014-10-13 02:01:12]

xuq@google.com changed reviewers:
+ yangguo@chromium.org

[Yang, 2014-10-13 06:46:35]

yangguo@chromium.org changed reviewers:
+ dslomov@chromium.org

[Yang, 2014-10-13 06:46:36]

LGTM. Thanks you for submitting this fix! I'll forward to Dmitry as this is his
area.

[Dmitry Lomov (no reviews), 2014-10-13 09:33:21]

On 2014/10/13 06:46:36, Yang wrote:
> LGTM. Thanks you for submitting this fix! I'll forward to Dmitry as this is
his
> area.

LGTM. Thanks for noticing this!

[Dmitry Lomov (no reviews), 2014-10-13 09:34:19]

(I'll land for you)

[Dmitry Lomov (no reviews), 2014-10-13 09:48:57]

Committed patchset #5 (id:200001) manually as 24551 (presubmit successful).