diff -up firefox-52.0b8/gfx/2d/HelpersCairo.h.old firefox-52.0b8/gfx/2d/HelpersCairo.h

--- firefox-52.0b8/gfx/2d/HelpersCairo.h.old	2017-03-02 09:23:01.230766731 -0500

+++ firefox-52.0b8/gfx/2d/HelpersCairo.h	2017-03-02 09:23:49.711930251 -0500

@@ -239,9 +239,9 @@ CairoFormatToGfxFormat(cairo_format_t fo

 {

   switch (format) {

     case CAIRO_FORMAT_ARGB32:

-      return SurfaceFormat::A8R8G8B8_UINT32;

+      return SurfaceFormat::B8G8R8A8;

     case CAIRO_FORMAT_RGB24:

-      return SurfaceFormat::X8R8G8B8_UINT32;

+      return SurfaceFormat::B8G8R8X8;

     case CAIRO_FORMAT_A8:

       return SurfaceFormat::A8;

     case CAIRO_FORMAT_RGB16_565: