[wip] unprefix filter

third_party/WebKit/Source/core/layout/svg/SVGLayoutTreeAsText.cpp

Index: third_party/WebKit/Source/core/layout/svg/SVGLayoutTreeAsText.cpp
diff --git a/third_party/WebKit/Source/core/layout/svg/SVGLayoutTreeAsText.cpp b/third_party/WebKit/Source/core/layout/svg/SVGLayoutTreeAsText.cpp
index 8fbbbcade8507a67a2784665b489e5ebeb50e85a..faccc70cf41f9f6e3e27d0ad1666380d2a04a5b4 100644
--- a/third_party/WebKit/Source/core/layout/svg/SVGLayoutTreeAsText.cpp
+++ b/third_party/WebKit/Source/core/layout/svg/SVGLayoutTreeAsText.cpp
@@ -46,6 +46,7 @@
 #include "core/layout/svg/SVGLayoutSupport.h"
 #include "core/layout/svg/line/SVGInlineTextBox.h"
 #include "core/layout/svg/line/SVGRootInlineBox.h"
+#include "core/paint/PaintLayer.h"
 #include "core/svg/LinearGradientAttributes.h"
 #include "core/svg/PatternAttributes.h"
 #include "core/svg/RadialGradientAttributes.h"
@@ -583,6 +584,18 @@ void writeSVGContainer(TextStream& ts, const LayoutObject& container, int indent
 
 void write(TextStream& ts, const LayoutSVGRoot& root, int indent)
 {
+    if (!root.hasFilterInducingProperty()) {
+        writeStandardPrefix(ts, root, indent);
+        ts << root << "\n";
+        writeChildren(ts, root, indent);
+        return;
+    }
+
+    // An svg root element with a filter + reflect style can cause
+    // a compositing state query assert while dumping the tree, so
+    // quash it for now. FIXME: why is this so, why the assert?
+
+    DisableCompositingQueryAsserts disabler;
     writeStandardPrefix(ts, root, indent);
     ts << root << "\n";
     writeChildren(ts, root, indent);
@@ -659,14 +672,22 @@ void writeResources(TextStream& ts, const LayoutObject& object, int indent)
             ts << " " << clipper->resourceBoundingBox(&layoutObject) << "\n";
         }
     }
-    if (!svgStyle.filterResource().isEmpty()) {
-        if (LayoutSVGResourceFilter* filter = getLayoutSVGResourceById<LayoutSVGResourceFilter>(object.document(), svgStyle.filterResource())) {
-            writeIndent(ts, indent);
-            ts << " ";
-            writeNameAndQuotedValue(ts, "filter", svgStyle.filterResource());
-            ts << " ";
-            writeStandardPrefix(ts, *filter, 0);
-            ts << " " << filter->resourceBoundingBox(&layoutObject) << "\n";
+    if (style.hasFilter()) {
+        const FilterOperations& filterOperations = style.filter();
+        if (filterOperations.size() == 1) {
+            const FilterOperation& filterOperation = *filterOperations.at(0);
+            if (filterOperation.type() == FilterOperation::REFERENCE) {
+                const auto& referenceFilterOperation = toReferenceFilterOperation(filterOperation);
+                AtomicString id = SVGURIReference::fragmentIdentifierFromIRIString(referenceFilterOperation.url(), object.document());
+                if (LayoutSVGResourceFilter* filter = getLayoutSVGResourceById<LayoutSVGResourceFilter>(object.document(), id)) {
+                    writeIndent(ts, indent);
+                    ts << " ";
+                    writeNameAndQuotedValue(ts, "filter", id);
+                    ts << " ";
+                    writeStandardPrefix(ts, *filter, 0);
+                    ts << " " << filter->resourceBoundingBox(&layoutObject) << "\n";
+                }
+            }
         }
     }
 }