Reduce the scope of the allowed unsafe code in gfx::text.

components/gfx/lib.rs

@@ -107,5 +107,4 @@ pub mod paint_thread;
 mod platform;
 
 // Text
-#[allow(unsafe_code)]
 pub mod text;

components/gfx/text/glyph.rs

@@ -627,6 +627,7 @@ impl<'a> GlyphStore {
     /// Used for SIMD.
     #[inline]
     #[cfg(any(target_arch = "x86_64", target_arch = "aarch64"))]
+    #[allow(unsafe_code)]
     fn transmute_entry_buffer_to_u32_buffer(&self) -> &[u32] {
         unsafe { mem::transmute(self.entry_buffer.as_slice()) }
     }

components/gfx/text/shaping/harfbuzz.rs

@@ -2,6 +2,8 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#![allow(unsafe_code)]
+
 use app_units::Au;
 use euclid::Point2D;
 use font::{DISABLE_KERNING_SHAPING_FLAG, Font, FontTableMethods, FontTableTag};