diff --git a/Cargo.lock b/Cargo.lock
index 59ff8121da8..b5817750ad7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -294,7 +294,7 @@ dependencies = [
  "offscreen_gl_context 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "servo_config 0.0.1",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
@@ -309,7 +309,7 @@ dependencies = [
  "plugins 0.0.1",
  "serde 0.8.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 0.8.23 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
@@ -444,8 +444,8 @@ dependencies = [
  "servo_url 0.0.1",
  "style_traits 0.0.1",
  "time 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender 0.14.0 (git+https://github.com/servo/webrender)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender 0.15.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
@@ -479,7 +479,7 @@ dependencies = [
  "servo_remutex 0.0.1",
  "servo_url 0.0.1",
  "style_traits 0.0.1",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "webvr_traits 0.0.1",
 ]
 
@@ -700,7 +700,7 @@ dependencies = [
  "servo_geometry 0.0.1",
  "servo_url 0.0.1",
  "style_traits 0.0.1",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "x11 2.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -982,7 +982,7 @@ dependencies = [
  "time 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "truetype 0.24.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-script 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "xi-unicode 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1062,7 +1062,7 @@ dependencies = [
  "servo_url 0.0.1",
  "style_traits 0.0.1",
  "user32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "x11 2.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1362,7 +1362,7 @@ dependencies = [
  "style_traits 0.0.1",
  "unicode-bidi 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-script 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
@@ -1403,7 +1403,7 @@ dependencies = [
  "servo_geometry 0.0.1",
  "servo_url 0.0.1",
  "style 0.0.1",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
@@ -1417,7 +1417,7 @@ dependencies = [
  "profile_traits 0.0.1",
  "script_traits 0.0.1",
  "servo_url 0.0.1",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
@@ -1502,8 +1502,8 @@ dependencies = [
  "style 0.0.1",
  "url 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "webdriver_server 0.0.1",
- "webrender 0.14.0 (git+https://github.com/servo/webrender)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender 0.15.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "webvr 0.0.1",
  "webvr_traits 0.0.1",
 ]
@@ -1643,7 +1643,7 @@ dependencies = [
  "plugins 0.0.1",
  "serde 0.8.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 0.8.23 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
@@ -1679,7 +1679,7 @@ dependencies = [
  "unicase 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "uuid 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "websocket 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1739,7 +1739,7 @@ dependencies = [
  "servo_url 0.0.1",
  "url 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "uuid 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "websocket 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -2292,7 +2292,7 @@ dependencies = [
  "tinyfiledialogs 2.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "uuid 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "websocket 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "webvr 0.0.1",
  "webvr_traits 0.0.1",
@@ -3161,8 +3161,8 @@ dependencies = [
 
 [[package]]
 name = "webrender"
-version = "0.14.0"
-source = "git+https://github.com/servo/webrender#2f17a525d6b3ff8737b2ffb9e7ff5c1ad11e333a"
+version = "0.15.0"
+source = "git+https://github.com/servo/webrender#512b4a1433a7827ef7cfd121d2f99fdd91ecf80e"
 dependencies = [
  "app_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bincode 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3183,13 +3183,13 @@ dependencies = [
  "offscreen_gl_context 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "threadpool 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
 ]
 
 [[package]]
 name = "webrender_traits"
-version = "0.13.0"
-source = "git+https://github.com/servo/webrender#2f17a525d6b3ff8737b2ffb9e7ff5c1ad11e333a"
+version = "0.14.0"
+source = "git+https://github.com/servo/webrender#512b4a1433a7827ef7cfd121d2f99fdd91ecf80e"
 dependencies = [
  "app_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3229,7 +3229,7 @@ dependencies = [
  "msg 0.0.1",
  "script_traits 0.0.1",
  "servo_config 0.0.1",
- "webrender_traits 0.13.0 (git+https://github.com/servo/webrender)",
+ "webrender_traits 0.14.0 (git+https://github.com/servo/webrender)",
  "webvr_traits 0.0.1",
 ]
 
@@ -3565,8 +3565,8 @@ dependencies = [
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 "checksum walkdir 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "bb08f9e670fab86099470b97cd2b252d6527f0b3cc1401acdb595ffc9dd288ff"
 "checksum webdriver 0.20.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cdc28802daddee94267a657ffeac2593a33881fb7a3a44fedd320b1319efcaf6"
-"checksum webrender 0.14.0 (git+https://github.com/servo/webrender)" = "<none>"
-"checksum webrender_traits 0.13.0 (git+https://github.com/servo/webrender)" = "<none>"
+"checksum webrender 0.15.0 (git+https://github.com/servo/webrender)" = "<none>"
+"checksum webrender_traits 0.14.0 (git+https://github.com/servo/webrender)" = "<none>"
 "checksum websocket 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4a1a6ea5ed0367f32eb3d94dcc58859ef4294b5f75ba983dbf56ac314af45d"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
diff --git a/components/compositing/compositor.rs b/components/compositing/compositor.rs
index d0769c8a0ec..aa8f7d72968 100644
--- a/components/compositing/compositor.rs
+++ b/components/compositing/compositor.rs
@@ -361,11 +361,6 @@ impl webrender_traits::RenderNotifier for RenderNotifier {
     fn new_scroll_frame_ready(&mut self, composite_needed: bool) {
         self.compositor_proxy.send(Msg::NewScrollFrameReady(composite_needed));
     }
-
-    fn pipeline_size_changed(&mut self,
-                             _: webrender_traits::PipelineId,
-                             _: Option<webrender_traits::LayoutSize>) {
-    }
 }
 
 // Used to dispatch functions from webrender to the main thread's event loop.
diff --git a/components/layout/webrender_helpers.rs b/components/layout/webrender_helpers.rs
index d146b4c5f44..725570640f6 100644
--- a/components/layout/webrender_helpers.rs
+++ b/components/layout/webrender_helpers.rs
@@ -229,8 +229,8 @@ impl WebRenderDisplayItemConverter for DisplayItem {
                             let glyph_offset = glyph.offset().unwrap_or(Point2D::zero());
                             let glyph = webrender_traits::GlyphInstance {
                                 index: glyph.id(),
-                                x: (origin.x + glyph_offset.x).to_f32_px(),
-                                y: (origin.y + glyph_offset.y).to_f32_px(),
+                                point: Point2D::new((origin.x + glyph_offset.x).to_f32_px(),
+                                                    (origin.y + glyph_offset.y).to_f32_px()),
                             };
                             glyphs.push(glyph);
                         }
@@ -354,7 +354,11 @@ impl WebRenderDisplayItemConverter for DisplayItem {
             }
             DisplayItem::PopStackingContext(_) => builder.pop_stacking_context(),
             DisplayItem::PushScrollRoot(ref item) => {
-                builder.push_scroll_layer(item.scroll_root.clip.to_rectf(),
+                let clip = builder.new_clip_region(&item.scroll_root.clip.to_rectf(),
+                                                   vec![],
+                                                   None);
+
+                builder.push_scroll_layer(clip,
                                           item.scroll_root.size.to_sizef(),
                                           item.scroll_root.id.convert_to_webrender());
             }
diff --git a/components/servo/lib.rs b/components/servo/lib.rs
index 4b73e798956..bf6a5c66b1d 100644
--- a/components/servo/lib.rs
+++ b/components/servo/lib.rs
@@ -184,7 +184,7 @@ impl<Window> Browser<Window> where Window: WindowMethods + 'static {
                 clear_framebuffer: true,
                 clear_color: webrender_traits::ColorF::new(1.0, 1.0, 1.0, 1.0),
                 render_target_debug: false,
-            }).unwrap()
+            }).expect("Unable to initialize webrender!")
         };
 
         // Important that this call is done in a single-threaded fashion, we
diff --git a/tests/wpt/metadata-css/css-transforms-1_dev/html/css-scale-nested-001.htm.ini b/tests/wpt/metadata-css/css-transforms-1_dev/html/css-scale-nested-001.htm.ini
deleted file mode 100644
index 6ed612b76e4..00000000000
--- a/tests/wpt/metadata-css/css-transforms-1_dev/html/css-scale-nested-001.htm.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[css-scale-nested-001.htm]
-  type: reftest
-  expected: CRASH
diff --git a/tests/wpt/metadata-css/css-transforms-1_dev/html/scale-zero-001.htm.ini b/tests/wpt/metadata-css/css-transforms-1_dev/html/scale-zero-001.htm.ini
deleted file mode 100644
index 8581ed9a834..00000000000
--- a/tests/wpt/metadata-css/css-transforms-1_dev/html/scale-zero-001.htm.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[scale-zero-001.htm]
-  type: reftest
-  expected: CRASH
diff --git a/tests/wpt/metadata-css/css-transforms-1_dev/html/transform-singular-001.htm.ini b/tests/wpt/metadata-css/css-transforms-1_dev/html/transform-singular-001.htm.ini
deleted file mode 100644
index d292950feee..00000000000
--- a/tests/wpt/metadata-css/css-transforms-1_dev/html/transform-singular-001.htm.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[transform-singular-001.htm]
-  type: reftest
-  expected: CRASH
diff --git a/tests/wpt/metadata-css/css-transforms-1_dev/html/transform3d-scale-004.htm.ini b/tests/wpt/metadata-css/css-transforms-1_dev/html/transform3d-scale-004.htm.ini
deleted file mode 100644
index e978219dd35..00000000000
--- a/tests/wpt/metadata-css/css-transforms-1_dev/html/transform3d-scale-004.htm.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[transform3d-scale-004.htm]
-  type: reftest
-  expected: CRASH
diff --git a/tests/wpt/metadata-css/filters-1_dev/html/css-filters-animation-combined-001.htm.ini b/tests/wpt/metadata-css/filters-1_dev/html/css-filters-animation-combined-001.htm.ini
new file mode 100644
index 00000000000..28deb704c45
--- /dev/null
+++ b/tests/wpt/metadata-css/filters-1_dev/html/css-filters-animation-combined-001.htm.ini
@@ -0,0 +1,3 @@
+[css-filters-animation-combined-001.htm]
+  type: reftest
+  expected: FAIL