Move DL items from gfx to layout

Implement corner clipping.
Remove PixelFormat from WebrenderImageInfo.
Use WebRender text shadow.
Remove MallocSizeOf and Deserialize for DL items.

Closes #19649, #19680, #19802

components/gfx/Cargo.toml

@@ -28,15 +28,12 @@ lazy_static = "1"
 libc = "0.2"
 log = "0.3.5"
 malloc_size_of = { path = "../malloc_size_of" }
-malloc_size_of_derive = { path = "../malloc_size_of_derive" }
-msg = {path = "../msg"}
 net_traits = {path = "../net_traits"}
 ordered-float = "0.4"
 range = {path = "../range"}
 serde = "1.0"
 servo_arc = {path = "../servo_arc"}
 servo_atoms = {path = "../atoms"}
-servo_geometry = {path = "../geometry"}
 servo_url = {path = "../url"}
 smallvec = "0.6"
 style = {path = "../style"}

components/gfx/lib.rs

@@ -43,14 +43,11 @@ extern crate libc;
 extern crate log;
 #[cfg_attr(target_os = "windows", macro_use)]
 extern crate malloc_size_of;
-#[macro_use] extern crate malloc_size_of_derive;
-extern crate msg;
 extern crate net_traits;
 extern crate ordered_float;
 extern crate range;
 #[macro_use] extern crate serde;
 extern crate servo_arc;
-extern crate servo_geometry;
 extern crate servo_url;
 #[macro_use] extern crate servo_atoms;
 #[cfg(feature = "unstable")]
@@ -66,9 +63,6 @@ extern crate xi_unicode;
 #[cfg(target_os = "android")]
 extern crate xml5ever;
 
-#[deny(unsafe_code)]
-pub mod display_list;
-
 // Fonts
 #[macro_use] pub mod font;
 pub mod font_cache_thread;

components/gfx/platform/macos/font_context.rs

@@ -2,7 +2,9 @@
  * 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/. */
 
-#[derive(Clone, Debug, MallocSizeOf)]
+use malloc_size_of::{MallocSizeOf, MallocSizeOfOps};
+
+#[derive(Clone, Debug)]
 pub struct FontContextHandle {
     ctx: ()
 }
@@ -13,3 +15,9 @@ impl FontContextHandle {
         FontContextHandle { ctx: () }
     }
 }
+
+impl MallocSizeOf for FontContextHandle {
+    fn size_of(&self, _: &mut MallocSizeOfOps) -> usize {
+        0
+    }
+}