Add image_diff from the chromium repo.
This is needed for reference tests so we can diff images. This is just a straight copy of the image diff in the chromium repo. R=eseidel@google.com, esprehn@chromium.org Review URL: https://codereview.chromium.org/801443002
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tools/imagediff/BUILD.gn
0 → 100644
tools/imagediff/image_diff.cc
0 → 100644
tools/imagediff/image_diff_png.cc
0 → 100644
此差异已折叠。
tools/imagediff/image_diff_png.h
0 → 100644
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