gfxIntSize is just a typedef of gfx::IntSize, so this is very mechanical. The
only tricky part is deciding for each occurrence whether to replace it with
IntSize, gfx::IntSize or mozilla::gfx::IntSize; in all cases I went with the
shortest one that worked given the existing "using namespace" declarations.
The bulk of this commit was generated by running:
run-clang-tidy.py \
-checks='-*,llvm-namespace-comment' \
-header-filter=^/.../mozilla-central/.* \
-fix
There are three spaces that nsSVGIntegrationUtils needs to convert between. I'll call them "frame space", "bounding box frame space" and "user space".
"Bounding box frame space" has its origin at the top left of the union of a frame's border boxes over all continuations.
For SVG frames, "frame space" and "bounding box frame space" are the same because SVG frames don't have multiple continuations.
For non-SVG frames, "bounding box frame space" and "user space" are the same.
However, for SVG frames, "bounding box frame space" and "user space" are different! For example, for a <rect x="100" y="100">, the point 0,0 in frame space is at the rect's top left corner, but the point 0,0 in user space is 100,100 pixels away from the rect's corner.
nsSVGIntegrationUtils::GetOffsetToUserSpace took the non-SVG viewpoint, but it's misleading for SVG frames.
