Make 'transform' a presentation attribute on SVG elements

third_party/WebKit/Source/core/css/resolver/TransformBuilder.cpp

Index: third_party/WebKit/Source/core/css/resolver/TransformBuilder.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/TransformBuilder.cpp b/third_party/WebKit/Source/core/css/resolver/TransformBuilder.cpp
index 3bea8d9fc973114d183019b4383d37792f7a4fd3..548cddcf7e8a65f35b7d3d95795f83540b6b6743 100644
--- a/third_party/WebKit/Source/core/css/resolver/TransformBuilder.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/TransformBuilder.cpp
@@ -229,11 +229,25 @@ TransformOperations TransformBuilder::createTransformOperations(
       case TransformOperation::RotateY:
       case TransformOperation::RotateZ: {
         double angle = firstValue.computeDegrees();
-        double x = transformType == TransformOperation::RotateX;
-        double y = transformType == TransformOperation::RotateY;
-        double z = transformType == TransformOperation::RotateZ;
-        operations.operations().append(
-            RotateTransformOperation::create(x, y, z, angle, transformType));
+        if (transformValue->length() == 1) {
+          double x = transformType == TransformOperation::RotateX;
+          double y = transformType == TransformOperation::RotateY;
+          double z = transformType == TransformOperation::RotateZ;
+          operations.operations().append(
+              RotateTransformOperation::create(x, y, z, angle, transformType));
+        } else {
+          // For SVG 'transform' attributes we generate 3-argument rotate()
+          // functions.
+          DCHECK_EQ(transformValue->length(), 3u);
+          const CSSPrimitiveValue& secondValue =
+              toCSSPrimitiveValue(transformValue->item(1));
+          const CSSPrimitiveValue& thirdValue =
+              toCSSPrimitiveValue(transformValue->item(2));
+          operations.operations().append(
+              RotateAroundOriginTransformOperation::create(
+                  angle, secondValue.computeLength<double>(conversionData),
+                  thirdValue.computeLength<double>(conversionData)));
+        }
         break;
       }
       case TransformOperation::Rotate3D: {