diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/Animations/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/Animations/BUILD.gn
index 484355e94d..2016247801 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/Animations/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/Animations/BUILD.gn
@@ -2,6 +2,8 @@ source_set("Animations") {
   configs += [ "//Userland/Libraries/LibWeb:configs" ]
   deps = [ "//Userland/Libraries/LibWeb:all_generated" ]
   sources = [
+    "Animatable.cpp",
+    "Animatable.h",
     "Animation.cpp",
     "Animation.h",
     "AnimationEffect.cpp",
@@ -12,6 +14,8 @@ source_set("Animations") {
     "AnimationTimeline.h",
     "DocumentTimeline.cpp",
     "DocumentTimeline.h",
+    "KeyframeEffect.cpp",
+    "KeyframeEffect.h",
     "TimingFunction.cpp",
     "TimingFunction.h",
   ]
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
index 076a33f87f..82386ea14c 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
@@ -8,7 +8,9 @@ source_set("CSS") {
   ]
   sources = [
     "Angle.cpp",
+    "AnimationEvent.cpp",
     "CSS.cpp",
+    "CSSAnimation.cpp",
     "CSSConditionRule.cpp",
     "CSSFontFaceRule.cpp",
     "CSSGroupingRule.cpp",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn
index d0028cd43d..42aa97d50b 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn
@@ -20,6 +20,7 @@ source_set("Layout") {
     "FrameBox.cpp",
     "GridFormattingContext.cpp",
     "ImageBox.cpp",
+    "ImageProvider.cpp",
     "InlineFormattingContext.cpp",
     "InlineLevelIterator.cpp",
     "InlineNode.cpp",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn
index 966093079f..9b5d4f6f8f 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn
@@ -14,6 +14,9 @@ source_set("Painting") {
     "ButtonPaintable.cpp",
     "CanvasPaintable.cpp",
     "CheckBoxPaintable.cpp",
+    "Command.cpp",
+    "CommandExecutorCPU.cpp",
+    "CommandList.cpp",
     "FilterPainting.cpp",
     "GradientPainting.cpp",
     "ImagePaintable.cpp",
@@ -26,7 +29,6 @@ source_set("Painting") {
     "Paintable.cpp",
     "PaintableBox.cpp",
     "PaintableFragment.cpp",
-    "PaintingCommandExecutorCPU.cpp",
     "RadioButtonPaintable.cpp",
     "RecordingPainter.cpp",
     "SVGGraphicsPaintable.cpp",
@@ -42,7 +44,7 @@ source_set("Painting") {
   ]
 
   if (current_os == "linux" || current_os == "mac") {
-    sources += [ "PaintingCommandExecutorGPU.cpp" ]
+    sources += [ "CommandExecutorGPU.cpp" ]
     public_deps = [ "//Userland/Libraries/LibAccelGfx" ]
   }
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/ResizeObserver/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/ResizeObserver/BUILD.gn
index 375e13b5d0..5c2fa16239 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/ResizeObserver/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/ResizeObserver/BUILD.gn
@@ -1,5 +1,14 @@
 source_set("ResizeObserver") {
   configs += [ "//Userland/Libraries/LibWeb:configs" ]
   deps = [ "//Userland/Libraries/LibWeb:all_generated" ]
-  sources = [ "ResizeObserver.cpp" ]
+  sources = [
+    "ResizeObservation.cpp",
+    "ResizeObservation.h",
+    "ResizeObserver.cpp",
+    "ResizeObserver.h",
+    "ResizeObserverEntry.cpp",
+    "ResizeObserverEntry.h",
+    "ResizeObserverSize.cpp",
+    "ResizeObserverSize.h",
+  ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni b/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
index 2fccc90757..8db796eff3 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
@@ -23,11 +23,14 @@ standard_idl_files = [
   "//Userland/Libraries/LibWeb/Animations/AnimationEffect.idl",
   "//Userland/Libraries/LibWeb/Animations/AnimationPlaybackEvent.idl",
   "//Userland/Libraries/LibWeb/Animations/AnimationTimeline.idl",
+  "//Userland/Libraries/LibWeb/Animations/KeyframeEffect.idl",
   "//Userland/Libraries/LibWeb/Animations/DocumentTimeline.idl",
   "//Userland/Libraries/LibWeb/Clipboard/Clipboard.idl",
   "//Userland/Libraries/LibWeb/Crypto/Crypto.idl",
   "//Userland/Libraries/LibWeb/Crypto/CryptoKey.idl",
   "//Userland/Libraries/LibWeb/Crypto/SubtleCrypto.idl",
+  "//Userland/Libraries/LibWeb/CSS/AnimationEvent.idl",
+  "//Userland/Libraries/LibWeb/CSS/CSSAnimation.idl",
   "//Userland/Libraries/LibWeb/CSS/CSSConditionRule.idl",
   "//Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.idl",
   "//Userland/Libraries/LibWeb/CSS/CSSGroupingRule.idl",
@@ -228,6 +231,8 @@ standard_idl_files = [
   "//Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserverEntryList.idl",
   "//Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.idl",
   "//Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.idl",
+  "//Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.idl",
+  "//Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverSize.idl",
   "//Userland/Libraries/LibWeb/Selection/Selection.idl",
   "//Userland/Libraries/LibWeb/Streams/ByteLengthQueuingStrategy.idl",
   "//Userland/Libraries/LibWeb/Streams/CountQueuingStrategy.idl",