Revert 102881 - Split touch and HiDPI newtab icons (non-binary part)
Revert 102881 - Split touch and HiDPI newtab icons (non-binary part)

This is the non-binary part of this CL:
http://codereview.chromium.org/8038043/

BUG=96009
TEST=

Review URL: http://codereview.chromium.org/8055001

TBR=sail@chromium.org
Review URL: http://codereview.chromium.org/8051009

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@102885 0039d316-1c4b-4281-b951-d872f2087c98

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