tree 8e0dde69c0a1d0566e2739b7ea5db533194cd9af
parent 4b9d8e938b9f40877c7886680de831dfe546989d
author Tom Sepez <tsepez@chromium.org> 1545250320 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1545250320 +0000

Fix some longstanding irks in CFX_Matrix

- Initialize in header to identity matrix.
- Add standard operator overloads.
- Use default methods where possible.

This, in turn, identified an unused variable now flagged by the
compiler which was removed from cpdf_array.cpp

Change-Id: I712cdcb1dd11a5a93314d54c836027b2c7ad472e
Reviewed-on: https://pdfium-review.googlesource.com/c/47450
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>