diff --git a/components/compositing/compositor.rs b/components/compositing/compositor.rs
index 0ef8d2ec07b5..da30b887b0a0 100644
--- a/components/compositing/compositor.rs
+++ b/components/compositing/compositor.rs
@@ -18,9 +18,10 @@ use gleam::gl::types::{GLint, GLsizei};
 use image::{DynamicImage, ImageFormat, RgbImage};
 use ipc_channel::ipc::{self, IpcSender, IpcSharedMemory};
 use ipc_channel::router::ROUTER;
-use msg::constellation_msg::{Image, PixelFormat, Key, KeyModifiers, KeyState};
+use msg::constellation_msg::{Key, KeyModifiers, KeyState};
 use msg::constellation_msg::{PipelineId, PipelineIndex, PipelineNamespaceId};
 use msg::constellation_msg::{TraversalDirection, WindowSizeType};
+use net_traits::image::base::{Image, PixelFormat};
 use profile_traits::mem::{self, Reporter, ReporterRequest};
 use profile_traits::time::{self, ProfilerCategory, profile};
 use script_traits::{AnimationState, AnimationTickType, ConstellationControlMsg};
diff --git a/components/compositing/compositor_thread.rs b/components/compositing/compositor_thread.rs
index 79fc074da77e..4796cd502f24 100644
--- a/components/compositing/compositor_thread.rs
+++ b/components/compositing/compositor_thread.rs
@@ -9,7 +9,8 @@ use compositor::CompositingReason;
 use euclid::point::Point2D;
 use euclid::size::Size2D;
 use ipc_channel::ipc::IpcSender;
-use msg::constellation_msg::{Image, Key, KeyModifiers, KeyState, PipelineId};
+use msg::constellation_msg::{Key, KeyModifiers, KeyState, PipelineId};
+use net_traits::image::base::Image;
 use profile_traits::mem;
 use profile_traits::time;
 use script_traits::{AnimationState, ConstellationMsg, EventResult};
diff --git a/components/msg/Cargo.toml b/components/msg/Cargo.toml
index cf283ea6e73f..ddc0b3e3f85f 100644
--- a/components/msg/Cargo.toml
+++ b/components/msg/Cargo.toml
@@ -14,7 +14,6 @@ bitflags = "0.7"
 cssparser = {version = "0.7", features = ["heap_size", "serde-serialization"]}
 heapsize = "0.3.0"
 heapsize_plugin = "0.1.2"
-ipc-channel = "0.5"
 plugins = {path = "../plugins"}
 serde = "0.8"
 serde_derive = "0.8"
diff --git a/components/msg/constellation_msg.rs b/components/msg/constellation_msg.rs
index 2aa8d19c8d2b..63904e2440c6 100644
--- a/components/msg/constellation_msg.rs
+++ b/components/msg/constellation_msg.rs
@@ -5,7 +5,6 @@
 //! The high-level interface from script to constellation. Using this abstract interface helps
 //! reduce coupling between these two components.
 
-use ipc_channel::ipc::IpcSharedMemory;
 use std::cell::Cell;
 use std::fmt;
 use webrender_traits;
@@ -163,25 +162,6 @@ bitflags! {
     }
 }
 
-#[derive(Clone, Copy, Deserialize, Eq, PartialEq, Serialize, HeapSizeOf)]
-pub enum PixelFormat {
-    K8,         // Luminance channel only
-    KA8,        // Luminance + alpha
-    RGB8,       // RGB, 8 bits per channel
-    RGBA8,      // RGB + alpha, 8 bits per channel
-}
-
-#[derive(Clone, Deserialize, Serialize, HeapSizeOf)]
-pub struct Image {
-    pub width: u32,
-    pub height: u32,
-    pub format: PixelFormat,
-    #[ignore_heap_size_of = "Defined in ipc-channel"]
-    pub bytes: IpcSharedMemory,
-    #[ignore_heap_size_of = "Defined in webrender_traits"]
-    pub id: Option<webrender_traits::ImageKey>,
-}
-
 #[derive(Clone, PartialEq, Eq, Copy, Hash, Debug, Deserialize, Serialize)]
 pub enum TraversalDirection {
     Forward(usize),
diff --git a/components/msg/lib.rs b/components/msg/lib.rs
index 3918a7ada77a..a2cc4bbab714 100644
--- a/components/msg/lib.rs
+++ b/components/msg/lib.rs
@@ -11,7 +11,6 @@
 #[macro_use]
 extern crate bitflags;
 extern crate heapsize;
-extern crate ipc_channel;
 extern crate serde;
 #[macro_use]
 extern crate serde_derive;
diff --git a/components/net_traits/Cargo.toml b/components/net_traits/Cargo.toml
index e3eba97c27dc..851b115a4c81 100644
--- a/components/net_traits/Cargo.toml
+++ b/components/net_traits/Cargo.toml
@@ -27,3 +27,8 @@ url = {version = "1.2", features = ["heap_size"]}
 websocket = "0.17"
 uuid = { version = "0.3.1", features = ["v4", "serde"] }
 cookie = {version = "0.2.5", features = ["serialize-rustc"]}
+
+[dependencies.webrender_traits]
+git = "https://github.com/servo/webrender"
+default_features = false
+features = ["serde_derive"]
diff --git a/components/net_traits/image/base.rs b/components/net_traits/image/base.rs
index cc604a1dc62d..78e896977142 100644
--- a/components/net_traits/image/base.rs
+++ b/components/net_traits/image/base.rs
@@ -4,8 +4,26 @@
 
 use ipc_channel::ipc::IpcSharedMemory;
 use piston_image::{self, DynamicImage, ImageFormat};
+use webrender_traits;
+
+#[derive(Clone, Copy, Deserialize, Eq, PartialEq, Serialize, HeapSizeOf)]
+pub enum PixelFormat {
+    K8,         // Luminance channel only
+    KA8,        // Luminance + alpha
+    RGB8,       // RGB, 8 bits per channel
+    RGBA8,      // RGB + alpha, 8 bits per channel
+}
 
-pub use msg::constellation_msg::{Image, PixelFormat};
+#[derive(Clone, Deserialize, Serialize, HeapSizeOf)]
+pub struct Image {
+    pub width: u32,
+    pub height: u32,
+    pub format: PixelFormat,
+    #[ignore_heap_size_of = "Defined in ipc-channel"]
+    pub bytes: IpcSharedMemory,
+    #[ignore_heap_size_of = "Defined in webrender_traits"]
+    pub id: Option<webrender_traits::ImageKey>,
+}
 
 #[derive(Clone, Deserialize, Eq, PartialEq, Serialize, HeapSizeOf)]
 pub struct ImageMetadata {
diff --git a/components/net_traits/image_cache_thread.rs b/components/net_traits/image_cache_thread.rs
index 7a6359e84b02..713ba52c1791 100644
--- a/components/net_traits/image_cache_thread.rs
+++ b/components/net_traits/image_cache_thread.rs
@@ -2,9 +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/. */
 
-use image::base::ImageMetadata;
+use image::base::{Image, ImageMetadata};
 use ipc_channel::ipc::{self, IpcSender};
-use msg::constellation_msg::Image;
 use std::sync::Arc;
 use url::Url;
 
diff --git a/components/net_traits/lib.rs b/components/net_traits/lib.rs
index 7459c2afb344..2908571bf843 100644
--- a/components/net_traits/lib.rs
+++ b/components/net_traits/lib.rs
@@ -34,6 +34,7 @@ extern crate serde_derive;
 extern crate url;
 extern crate util;
 extern crate uuid;
+extern crate webrender_traits;
 extern crate websocket;
 
 use cookie_rs::Cookie;
diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index 38b35a075735..85281b80f7c3 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -51,11 +51,12 @@ use hyper::header::Headers;
 use hyper::method::Method;
 use ipc_channel::ipc::{IpcReceiver, IpcSender};
 use libc::c_void;
-use msg::constellation_msg::{FrameId, FrameType, Image, Key, KeyModifiers, KeyState};
+use msg::constellation_msg::{FrameId, FrameType, Key, KeyModifiers, KeyState};
 use msg::constellation_msg::{PipelineId, PipelineNamespaceId, ReferrerPolicy};
 use msg::constellation_msg::{TraversalDirection, WindowSizeType};
 use net_traits::{LoadOrigin, ResourceThreads};
 use net_traits::bluetooth_thread::BluetoothMethodMsg;
+use net_traits::image::base::Image;
 use net_traits::image_cache_thread::ImageCacheThread;
 use net_traits::response::HttpsState;
 use profile_traits::mem;
diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index 1642bd389d1a..98b64943bc88 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -1385,7 +1385,6 @@ dependencies = [
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "serde 0.8.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 0.8.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1485,6 +1484,7 @@ dependencies = [
  "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "util 0.0.1",
  "uuid 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "webrender_traits 0.6.0 (git+https://github.com/servo/webrender)",
  "websocket 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2647,6 +2647,7 @@ dependencies = [
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
+ "net_traits 0.0.1",
  "plugins 0.0.1",
  "regex 0.1.76 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/components/webdriver_server/Cargo.toml b/components/webdriver_server/Cargo.toml
index b2530adcd6fc..b0394b32f906 100644
--- a/components/webdriver_server/Cargo.toml
+++ b/components/webdriver_server/Cargo.toml
@@ -16,6 +16,7 @@ image = "0.10"
 ipc-channel = "0.5"
 log = "0.3.5"
 msg = {path = "../msg"}
+net_traits = {path = "../net_traits"}
 plugins = {path = "../plugins"}
 regex = "0.1.55"
 rustc-serialize = "0.3.4"
diff --git a/components/webdriver_server/lib.rs b/components/webdriver_server/lib.rs
index 3bfdecd23681..bf0ebbaee378 100644
--- a/components/webdriver_server/lib.rs
+++ b/components/webdriver_server/lib.rs
@@ -18,6 +18,7 @@ extern crate ipc_channel;
 #[macro_use]
 extern crate log;
 extern crate msg;
+extern crate net_traits;
 extern crate regex;
 extern crate rustc_serialize;
 extern crate script_traits;
@@ -33,8 +34,8 @@ use hyper::method::Method::{self, Post};
 use image::{DynamicImage, ImageFormat, RgbImage};
 use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
 use keys::keycodes_to_keys;
-use msg::constellation_msg::{FrameId, PipelineId};
-use msg::constellation_msg::{PixelFormat, TraversalDirection};
+use msg::constellation_msg::{FrameId, PipelineId, TraversalDirection};
+use net_traits::image::base::PixelFormat;
 use regex::Captures;
 use rustc_serialize::base64::{CharacterSet, Config, Newline, ToBase64};
 use rustc_serialize::json::{Json, ToJson};
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index 5b6239880898..1aa9e3d2bbf1 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -1285,7 +1285,6 @@ dependencies = [
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "serde 0.8.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 0.8.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1363,6 +1362,7 @@ dependencies = [
  "url 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "util 0.0.1",
  "uuid 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "webrender_traits 0.6.0 (git+https://github.com/servo/webrender)",
  "websocket 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2505,6 +2505,7 @@ dependencies = [
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
+ "net_traits 0.0.1",
  "plugins 0.0.1",
  "regex 0.1.76 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",