Test that TypedArray properties cannot be set in strict mode

Additional TypedArray tests

- Test that TypedArray properties cannot be set in strict mode
  Properties like %TypedArray%.prototype.length have a getter and no
  setter. This test verifies that property, which was apparently not
  true in the past or had no test ensuring throwing in this case.
- Test that TypedArray integer indexed properties (array elements)
  are not configurable

Both of these have passed for some time, but there are open bugs against
them and apparently no tests verifying that they are fixed.

BUG=v8:3048, v8:3799
LOG=N
R=adamk

Committed: https://crrev.com/8068b91d15733eee3f97bb741197a1b6da1550e1
Cr-Commit-Position: refs/heads/master@{#29717}

[adamk, 2015-07-16 22:24:22]

On your CL description: to specify multiple bugs, add a comma between them on a
single BUG= line, rather than multiple BUG lines.

https://codereview.chromium.org/1232843005/diff/20001/test/mjsunit/es6/typeda...
File test/mjsunit/es6/typedarray.js (right):

https://codereview.chromium.org/1232843005/diff/20001/test/mjsunit/es6/typeda...
test/mjsunit/es6/typedarray.js:421: var d =
Object.getOwnPropertyDescriptor(constructor.prototype, name);
You can also test this more directly:

assertEquals(undefined, d.set);

[Dan Ehrenberg, 2015-07-16 23:54:55]

https://codereview.chromium.org/1232843005/diff/20001/test/mjsunit/es6/typeda...
File test/mjsunit/es6/typedarray.js (right):

https://codereview.chromium.org/1232843005/diff/20001/test/mjsunit/es6/typeda...
test/mjsunit/es6/typedarray.js:421: var d =
Object.getOwnPropertyDescriptor(constructor.prototype, name);
On 2015/07/16 22:24:22, adamk wrote:
> You can also test this more directly:
> 
> assertEquals(undefined, d.set);

Acknowledged.

[adamk, 2015-07-16 23:55:21]

lgtm, no need to duplicate the check for named properties (which aren't exotic
on these objects)

[Dan Ehrenberg, 2015-07-16 23:55:32]

The CQ bit was checked by littledan@chromium.org

[commit-bot: I haz the power, 2015-07-16 23:55:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1232843005/20001

[commit-bot: I haz the power, 2015-07-17 00:21:16]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-17 00:21:43]

Patchset 2 (id:??) landed as
https://crrev.com/8068b91d15733eee3f97bb741197a1b6da1550e1
Cr-Commit-Position: refs/heads/master@{#29717}