Implement %TypedArray%.{fill,find,findIndex}

Implement %TypedArray%.{fill,find,findIndex}

This patch adds three methods to TypedArrays which are already
implemented for arrays. The implementations are made by calling
out to the underlying code used by Arrays.

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

Committed: https://crrev.com/b57428e9efe2b07656e5d78fbcfb2d4ba62bb86b
Cr-Commit-Position: refs/heads/master@{#28382}

[adamk, 2015-05-12 23:18:44]

lgtm % nits

https://codereview.chromium.org/1136663005/diff/1/src/harmony-array.js
File src/harmony-array.js (right):

https://codereview.chromium.org/1136663005/diff/1/src/harmony-array.js#newcod...
src/harmony-array.js:151: %FunctionSetLength(ArrayFindIndex, 1);
Please move this down to the other FunctionSetLength calls at the bottom of the
file.

https://codereview.chromium.org/1136663005/diff/1/src/harmony-array.js#newcod...
src/harmony-array.js:191: %FunctionSetLength(ArrayFill, 1);
Same here.

[dehrenberg, 2015-05-12 23:53:18]

The CQ bit was checked by dehrenberg@chromium.org

[dehrenberg, 2015-05-12 23:53:18]

The patchset sent to the CQ was uploaded after l-g-t-m from adamk@chromium.org
Link to the patchset: https://codereview.chromium.org/1136663005/#ps20001
(title: "Moving declarations")

[commit-bot: I haz the power, 2015-05-12 23:53:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1136663005/20001

[commit-bot: I haz the power, 2015-05-13 04:32:18]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-05-13 04:32:36]

Patchset 2 (id:??) landed as
https://crrev.com/b57428e9efe2b07656e5d78fbcfb2d4ba62bb86b
Cr-Commit-Position: refs/heads/master@{#28382}