diff --git a/engine/core/rendering/RenderLayer.cpp b/engine/core/rendering/RenderLayer.cpp
index cfee2f11f7c1adeac177a11d5b5d311d0080c52f..cc978cac2fd94b4329b639b32f9d3d133da34f84 100644
--- a/engine/core/rendering/RenderLayer.cpp
+++ b/engine/core/rendering/RenderLayer.cpp
@@ -389,27 +389,6 @@ const RenderLayer* RenderLayer::compositingContainer() const
     return 0;
 }
 
-RenderLayer* RenderLayer::enclosingFilterLayer(IncludeSelfOrNot includeSelf) const
-{
-    const RenderLayer* curr = (includeSelf == IncludeSelf) ? this : parent();
-    for (; curr; curr = curr->parent()) {
-        if (curr->requiresFullLayerImageForFilters())
-            return const_cast<RenderLayer*>(curr);
-    }
-
-    return 0;
-}
-
-bool RenderLayer::hasAncestorWithFilterOutsets() const
-{
-    for (const RenderLayer* curr = this; curr; curr = curr->parent()) {
-        RenderBox* renderer = curr->renderer();
-        if (renderer->style()->hasFilterOutsets())
-            return true;
-    }
-    return false;
-}
-
 enum TransparencyClipBoxBehavior {
     PaintingTransparencyClipBox,
     HitTestingTransparencyClipBox
diff --git a/engine/core/rendering/RenderLayer.h b/engine/core/rendering/RenderLayer.h
index 5742a77673e8f1412b0eb1344fc818d1741c1727..061a0007ed9197431f2da64120a326d630476ca8 100644
--- a/engine/core/rendering/RenderLayer.h
+++ b/engine/core/rendering/RenderLayer.h
@@ -138,8 +138,6 @@ public:
     RenderLayer* enclosingOverflowClipLayer(IncludeSelfOrNot = IncludeSelf) const;
 
     const RenderLayer* compositingContainer() const;
-    RenderLayer* enclosingFilterLayer(IncludeSelfOrNot = IncludeSelf) const;
-    bool hasAncestorWithFilterOutsets() const;
 
     void convertToLayerCoords(const RenderLayer* ancestorLayer, LayoutPoint&) const;
     void convertToLayerCoords(const RenderLayer* ancestorLayer, LayoutRect&) const;
diff --git a/engine/core/rendering/style/RenderStyle.h b/engine/core/rendering/style/RenderStyle.h
index 438658d8885c81bf38b99c8b0fc40ff5b3f47803..2c6c3621dfa354f8a21521286a592a25ac415766 100644
--- a/engine/core/rendering/style/RenderStyle.h
+++ b/engine/core/rendering/style/RenderStyle.h
@@ -343,7 +343,6 @@ public:
         return imageOutsets(borderImage());
     }
 
-    bool hasFilterOutsets() const { return hasFilter() && filter().hasOutsets(); }
     FilterOutsets filterOutsets() const { return hasFilter() ? filter().outsets() : FilterOutsets(); }
 
     Order rtlOrdering() const { return static_cast<Order>(inherited_flags.m_rtlOrdering); }
diff --git a/engine/platform/BUILD.gn b/engine/platform/BUILD.gn
index 1e26a8be84c201c9b37a9705411f28f91d1cdf63..13585a2e7c24b34b9ad7eb5bc35fb76515e3c856 100644
--- a/engine/platform/BUILD.gn
+++ b/engine/platform/BUILD.gn
@@ -675,7 +675,6 @@ test("platform_unittests") {
     "geometry/RoundedRectTest.cpp",
     "graphics/GraphicsContextTest.cpp",
     "graphics/ThreadSafeDataTransportTest.cpp",
-    "graphics/filters/FilterOperationsTest.cpp",
     "graphics/filters/ImageFilterBuilderTest.cpp",
     "graphics/gpu/DrawingBufferTest.cpp",
     "image-decoders/ImageDecoderTest.cpp",
diff --git a/engine/platform/graphics/filters/FilterOperations.cpp b/engine/platform/graphics/filters/FilterOperations.cpp
index e393c5bf0ebbaa6129d16b7e58d896df751ca754..4f6acb7c2dbdddeae15d5867004e369dcf1cd690 100644
--- a/engine/platform/graphics/filters/FilterOperations.cpp
+++ b/engine/platform/graphics/filters/FilterOperations.cpp
@@ -97,16 +97,6 @@ bool FilterOperations::hasReferenceFilter() const
     return false;
 }
 
-bool FilterOperations::hasOutsets() const
-{
-    for (size_t i = 0; i < m_operations.size(); ++i) {
-        FilterOperation::OperationType operationType = m_operations.at(i)->type();
-        if (operationType == FilterOperation::BLUR || operationType == FilterOperation::DROP_SHADOW || operationType == FilterOperation::REFERENCE)
-            return true;
-    }
-    return false;
-}
-
 FilterOutsets FilterOperations::outsets() const
 {
     FilterOutsets totalOutsets;
diff --git a/engine/platform/graphics/filters/FilterOperations.h b/engine/platform/graphics/filters/FilterOperations.h
index b216d60ace0c0725c2332b449f3c9b27c60b1b38..3caa4fd397dcde49fd08fefd3eb1aa0af40b1540 100644
--- a/engine/platform/graphics/filters/FilterOperations.h
+++ b/engine/platform/graphics/filters/FilterOperations.h
@@ -64,7 +64,6 @@ public:
 
     bool canInterpolateWith(const FilterOperations&) const;
 
-    bool hasOutsets() const;
     FilterOutsets outsets() const;
 
     bool hasFilterThatMovesPixels() const;
diff --git a/engine/platform/graphics/filters/FilterOperationsTest.cpp b/engine/platform/graphics/filters/FilterOperationsTest.cpp
deleted file mode 100644
index 58604f4a118a0ba7efe29cf988157f95d20c6a24..0000000000000000000000000000000000000000
--- a/engine/platform/graphics/filters/FilterOperationsTest.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2012 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "sky/engine/config.h"
-#include "sky/engine/platform/graphics/filters/FilterOperations.h"
-
-#include <gtest/gtest.h>
-
-using namespace blink;
-
-namespace {
-
-TEST(FilterOperationsTest, getOutsetsBlur)
-{
-    FilterOperations ops;
-    ops.operations().append(BlurFilterOperation::create(Length(20.0, Fixed)));
-    EXPECT_TRUE(ops.hasOutsets());
-    FilterOutsets outsets = ops.outsets();
-    EXPECT_EQ(57, outsets.top());
-    EXPECT_EQ(57, outsets.right());
-    EXPECT_EQ(57, outsets.bottom());
-    EXPECT_EQ(57, outsets.left());
-}
-
-TEST(FilterOperationsTest, getOutsetsDropShadow)
-{
-    FilterOperations ops;
-    ops.operations().append(DropShadowFilterOperation::create(IntPoint(3, 8), 20, Color(1, 2, 3)));
-    EXPECT_TRUE(ops.hasOutsets());
-    FilterOutsets outsets = ops.outsets();
-    EXPECT_EQ(49, outsets.top());
-    EXPECT_EQ(60, outsets.right());
-    EXPECT_EQ(65, outsets.bottom());
-    EXPECT_EQ(54, outsets.left());
-}
-
-}
-