tree ecd77946a63901df6c36ad5e604eda222a0d46a9
parent e24607c7637eff0d14dbd20cc71836ad41913935
author Lei Zhang <thestig@chromium.org> 1706653310 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1706653310 +0000

Remove dead code in CFX_DIBitmap

- Require a specific format for the argument to MultiplyAlphaMask().
  Update the MultiplyAlphaMask() call stack accordingly. Then remove
  code that assumes otherwise in MultiplyAlphaMask() and
  SetAlphaFromMask(). Since SetAlphaFromMask() is now much shorter, fold
  it into MultiplyAlphaMask().
- Recognize the source and destination are the same bitmap in
  SetRedFromAlpha(), and remove dead code.

Change-Id: I6365593e64bbdb2ec3a56d172f1f76035320fa26
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/115891
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Thomas Sepez <tsepez@google.com>
Reviewed-by: Tom Sepez <tsepez@chromium.org>