Auto merge of #15122 - anholt:webgl-premultiply, r=emilio

webgl: premultiplication, y flipping, and format conversion

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This series implements a bunch of the texture unpack path features for WebGL.  There are known issues with big-endian systems noted in the comments, but I don't know of a clean way to cast from `Vec<u16>` to `Vec<u8>` (which, if we had one, would make this code much cleaner anyway).

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- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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1 files changed, 1 insertions, 0 deletions

diff --git a/components/script/lib.rs b/components/script/lib.rs
index 15d1d2d322b..8c85efb489f 100644
--- a/components/script/lib.rs
+++ b/components/script/lib.rs
@@ -32,6 +32,7 @@ extern crate audio_video_metadata;
 #[macro_use]
 extern crate bitflags;
 extern crate bluetooth_traits;
+extern crate byteorder;
 extern crate canvas_traits;
 extern crate caseless;
 extern crate cookie as cookie_rs;