X87: [simd.js] Single SIMD128_VALUE_TYPE for all Simd128Values.

X87: [simd.js] Single SIMD128_VALUE_TYPE for all Simd128Values.

port f4c079d450a5990639b295d40a3d1663d70412d6 (r30107).

This is the appendix of 458dfe3b943edb3238917edfe9e2dde326cd1adb which misses
one modified file.

original commit message:

    There's no need to have one InstanceType per SIMD primitive type (this
    will not scale long-term).  Also reduce the amount of code duplication
    and make it more robust wrt adding new SIMD types.

BUG=

Committed: https://crrev.com/682365d77f954b879c9397587d118faa55218d0b
Cr-Commit-Position: refs/heads/master@{#30288}

[chunyang.dai, 2015-08-21 08:48:53]

chunyang.dai@intel.com changed reviewers:
+ weiliang.lin@intel.com

[chunyang.dai, 2015-08-21 08:48:54]

PTAL.

[Weiliang, 2015-08-21 09:40:35]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-08-21 09:40:36]

lgtm

[commit-bot: I haz the power, 2015-08-21 09:40:49]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1304963003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1304963003/1

[commit-bot: I haz the power, 2015-08-21 10:10:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-21 10:10:59]

Patchset 1 (id:??) landed as
https://crrev.com/682365d77f954b879c9397587d118faa55218d0b
Cr-Commit-Position: refs/heads/master@{#30288}