Revert of Add ETC1 powered SSE encoder for tile texture compression

Revert of Add ETC1 powered SSE encoder for tile texture compression (patchset #23 id:440001 of https://codereview.chromium.org/1096703002/)

Reason for revert:
Speculative revert. Looks like this change breaks compilation on win8 GN:
http://build.chromium.org/p/chromium.win/builders/Win8%20GN

Failure Example:
http://build.chromium.org/p/chromium.win/builders/Win8%20GN/builds/7283

Original issue's description:
> Add ETC1 powered SSE encoder for tile texture compression
>
> Created an ETC1 encoder that uses SSE2 to improve compression speed.
> The SSE encoder extends TextureCompressor and uses the same algorithm as TextureCompressorETC1.
>
> Added unittest for TextureCompressorETC1.
>
> Moved shared code into a etc1 header.
>
> Added new performance test scenarios.
>
> Performance difference on Ubuntu x64, Haswell Processor:
> Without SSE:
> *RESULT Compress256x256BlackAndWhiteGradientImage: ETC1 Low= 1.966321587562561 us
> *RESULT Compress256x256SolidBlackImage: ETC1 Low= .0956009104847908 us
> *RESULT Compress256x256SolidColorImage: ETC1 Low= .4367307722568512 us
> *RESULT Compress256x256RandomColorImage: ETC1 Low= 5.948055744171143 us
>
> With SSE:
> *RESULT Compress256x256BlackAndWhiteGradientImage: ETC1 Low= 1.0316201448440552 us
> *RESULT Compress256x256SolidBlackImage: ETC1 Low= .25716209411621094 us
> *RESULT Compress256x256SolidColorImage: ETC1 Low= .2768038809299469 us
> *RESULT Compress256x256RandomColorImage: ETC1 Low= 1.834145426750183 us
>
> BUG=434699
> TEST=newly added unittest TextureCompressorETC1Test::Compress256x256CreateETC1, TextureCompressorETC1Test::Compress256x256RatioETC1
>
> Committed: https://crrev.com/5f3849aa8307399b7e6dfe5665ed149594244077
> Cr-Commit-Position: refs/heads/master@{#329840}

TBR=reveman@chromium.org,christiank@opera.com,jie.a.chen@intel.com,robert.bradford@intel.com,radu.velea@intel.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=434699
Committed: https://crrev.com/4cac9b119cae33bf6277195cec857e97d7111690
Cr-Commit-Position: refs/heads/master@{#329845}

[sergeyv, 2015-05-14 14:15:29]

Created Revert of Add ETC1 powered SSE encoder for tile texture compression

[commit-bot: I haz the power, 2015-05-14 14:16:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1136083003/1

[commit-bot: I haz the power, 2015-05-14 14:18:37]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-14 14:19:19]

Patchset 1 (id:??) landed as
https://crrev.com/4cac9b119cae33bf6277195cec857e97d7111690
Cr-Commit-Position: refs/heads/master@{#329845}