BUG=263
TEST=set GYP_DEFINES=build_for_tool=drmemory target_arch=ia32 & drmemory out\debug\libyuv_unittest.exe --gtest_catch_exceptions=0 --gtest_filter=*
R=kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2270007

git-svn-id: http://libyuv.googlecode.com/svn/trunk@798 16f28f9a-4ce2-e073-06de-1de4eb20be90