Refactor SkiaImageFilterBuilder into a namespace.

third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp

Index: third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp b/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
index 40d369468b0466df1cfff4712d2beb88238e8cd8..d6859198543723a4e29edd42eaced97e77ba7872 100644
--- a/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
+++ b/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
@@ -1124,17 +1124,15 @@ WebLayer* GraphicsLayer::platformLayer() const
 
 void GraphicsLayer::setFilters(const FilterOperations& filters)
 {
-    SkiaImageFilterBuilder builder;
     OwnPtr<CompositorFilterOperations> webFilters = adoptPtr(CompositorFactory::current().createFilterOperations());
-    builder.buildFilterOperations(filters, webFilters.get());
+    SkiaImageFilterBuilder::buildFilterOperations(filters, webFilters.get());
     m_layer->layer()->setFilters(webFilters->asFilterOperations());
 }
 
 void GraphicsLayer::setBackdropFilters(const FilterOperations& filters)
 {
-    SkiaImageFilterBuilder builder;
     OwnPtr<CompositorFilterOperations> webFilters = adoptPtr(CompositorFactory::current().createFilterOperations());
-    builder.buildFilterOperations(filters, webFilters.get());
+    SkiaImageFilterBuilder::buildFilterOperations(filters, webFilters.get());
     m_layer->layer()->setBackgroundFilters(webFilters->asFilterOperations());
 }