SPv2: Paint SVG images and self-contained recorded pictures with their own trees.

third_party/WebKit/Source/platform/graphics/paint/SkPictureBuilder.cpp

Index: third_party/WebKit/Source/platform/graphics/paint/SkPictureBuilder.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/SkPictureBuilder.cpp b/third_party/WebKit/Source/platform/graphics/paint/SkPictureBuilder.cpp
index 1013a7c7c20f4ca268568aee2c05d0befc3689ea..86f6a95cb5e5d698d4db0aa02b892714d60ddf7b 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/SkPictureBuilder.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/SkPictureBuilder.cpp
@@ -25,6 +25,16 @@ SkPictureBuilder::SkPictureBuilder(const FloatRect& bounds,
   } else {
     m_paintControllerPtr = PaintController::create();
     m_paintController = m_paintControllerPtr.get();
+
+    // Content painted with a new paint controller in SPv2 will have an
+    // independent property tree set.
+    if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
+      PaintChunk::Id id(*this, DisplayItem::kSVGImage);
+      PropertyTreeState state(
+          TransformPaintPropertyNode::root(), ClipPaintPropertyNode::root(),
+          EffectPaintPropertyNode::root(), ScrollPaintPropertyNode::root());
+      m_paintController->updateCurrentPaintChunkProperties(&id, state);
+    }
   }
 #if DCHECK_IS_ON()
   m_paintController->setUsage(PaintController::ForSkPictureBuilder);