ui/base/resource: Remove dependency on net's big_endian implementation.

To remove this dependency we ended up moving big_endian* to base/, since besides ui/,
big_endian is also used by other top-level modules: chrome/utility/, cloud_print, media/cast

This way we removed one more net dependency from ui/base/.

BUG=299841
TEST=ui_unittests
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Review URL: https://codereview.chromium.org/145873006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253510 0039d316-1c4b-4281-b951-d872f2087c98
39 files changed