diff --git a/servo/components/compositing/compositor.rs b/servo/components/compositing/compositor.rs
index da23b60b4147..03be8bcef241 100644
--- a/servo/components/compositing/compositor.rs
+++ b/servo/components/compositing/compositor.rs
@@ -14,7 +14,7 @@ use euclid::scale_factor::ScaleFactor;
 use euclid::size::TypedSize2D;
 use euclid::{Matrix4, Point2D, Rect, Size2D};
 use gfx::paint_thread::{ChromeToPaintMsg, PaintRequest};
-use gfx_traits::{color, Epoch, LayerId, LayerKind, LayerProperties, ScrollPolicy};
+use gfx_traits::{color, Epoch, FrameTreeId, LayerId, LayerKind, LayerProperties, ScrollPolicy};
 use gleam::gl;
 use gleam::gl::types::{GLint, GLsizei};
 use image::{DynamicImage, ImageFormat, RgbImage};
@@ -27,7 +27,6 @@ use layers::rendergl;
 use layers::rendergl::RenderContext;
 use layers::scene::Scene;
 use layout_traits::LayoutControlChan;
-use msg::compositor_msg::FrameTreeId;
 use msg::constellation_msg::{AnimationState, Image, PixelFormat};
 use msg::constellation_msg::{Key, KeyModifiers, KeyState, LoadData, MouseButton};
 use msg::constellation_msg::{NavigationDirection, PipelineId, WindowSizeData};
diff --git a/servo/components/compositing/compositor_thread.rs b/servo/components/compositing/compositor_thread.rs
index 4972c6bc6ccf..98a65863f77c 100644
--- a/servo/components/compositing/compositor_thread.rs
+++ b/servo/components/compositing/compositor_thread.rs
@@ -8,12 +8,11 @@ use CompositorMsg as ConstellationMsg;
 use compositor;
 use euclid::point::Point2D;
 use euclid::size::Size2D;
-use gfx_traits::{Epoch, LayerId, LayerProperties, PaintListener};
+use gfx_traits::{Epoch, FrameTreeId, LayerId, LayerProperties, PaintListener};
 use headless;
 use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
 use layers::layers::{BufferRequest, LayerBufferSet};
 use layers::platform::surface::{NativeDisplay, NativeSurface};
-use msg::compositor_msg::FrameTreeId;
 use msg::constellation_msg::{AnimationState, PipelineId};
 use msg::constellation_msg::{Image, Key, KeyModifiers, KeyState};
 use profile_traits::mem;
diff --git a/servo/components/gfx/paint_thread.rs b/servo/components/gfx/paint_thread.rs
index 799960cfd7af..12187a527cc1 100644
--- a/servo/components/gfx/paint_thread.rs
+++ b/servo/components/gfx/paint_thread.rs
@@ -15,12 +15,11 @@ use euclid::rect::Rect;
 use euclid::size::Size2D;
 use font_cache_thread::FontCacheThread;
 use font_context::FontContext;
-use gfx_traits::color;
-use gfx_traits::{Epoch, LayerId, LayerKind, LayerProperties, PaintListener, PaintMsg as ConstellationMsg, ScrollPolicy};
+use gfx_traits::{Epoch, FrameTreeId, LayerId, LayerKind, LayerProperties};
+use gfx_traits::{PaintListener, PaintMsg as ConstellationMsg, ScrollPolicy, color};
 use ipc_channel::ipc::IpcSender;
 use layers::layers::{BufferRequest, LayerBuffer, LayerBufferSet};
 use layers::platform::surface::{NativeDisplay, NativeSurface};
-use msg::compositor_msg::FrameTreeId;
 use msg::constellation_msg::{ConstellationChan, Failure, PipelineId};
 use paint_context::PaintContext;
 use profile_traits::mem::{self, ReportsChan};
diff --git a/servo/components/gfx_traits/lib.rs b/servo/components/gfx_traits/lib.rs
index 30275465d856..980e850b0145 100644
--- a/servo/components/gfx_traits/lib.rs
+++ b/servo/components/gfx_traits/lib.rs
@@ -136,3 +136,13 @@ impl Epoch {
         *u += 1;
     }
 }
+
+#[derive(PartialEq, Eq, Debug, Copy, Clone)]
+pub struct FrameTreeId(pub u32);
+
+impl FrameTreeId {
+    pub fn next(&mut self) {
+        let FrameTreeId(ref mut u) = *self;
+        *u += 1;
+    }
+}
diff --git a/servo/components/gfx_traits/paint_listener.rs b/servo/components/gfx_traits/paint_listener.rs
index d132e1af0cb5..f47b442dead0 100644
--- a/servo/components/gfx_traits/paint_listener.rs
+++ b/servo/components/gfx_traits/paint_listener.rs
@@ -3,11 +3,11 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use Epoch;
+use FrameTreeId;
 use LayerId;
 use LayerProperties;
 use layers::layers::{BufferRequest, LayerBufferSet};
 use layers::platform::surface::NativeDisplay;
-use msg::compositor_msg::FrameTreeId;
 use msg::constellation_msg::PipelineId;
 
 /// The interface used by the painter to acquire draw targets for each paint frame and
diff --git a/servo/components/msg/compositor_msg.rs b/servo/components/msg/compositor_msg.rs
deleted file mode 100644
index bea159abc1f0..000000000000
--- a/servo/components/msg/compositor_msg.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * 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(PartialEq, Eq, Debug, Copy, Clone)]
-pub struct FrameTreeId(pub u32);
-
-impl FrameTreeId {
-    pub fn next(&mut self) {
-        let FrameTreeId(ref mut u) = *self;
-        *u += 1;
-    }
-}
diff --git a/servo/components/msg/lib.rs b/servo/components/msg/lib.rs
index 13a50e6a9627..3b5c99b8f3ca 100644
--- a/servo/components/msg/lib.rs
+++ b/servo/components/msg/lib.rs
@@ -16,6 +16,5 @@ extern crate serde;
 extern crate url;
 extern crate util;
 
-pub mod compositor_msg;
 pub mod constellation_msg;
 pub mod webdriver_msg;