Remove 2 unused defines USE_CHROMIUM_SKIA and SK_BUILD_FOR_CHROMIUM

R=robertphillips@google.com

Review URL: https://codereview.chromium.org/23618057

git-svn-id: http://skia.googlecode.com/svn/trunk@11381 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed