Draw recorded content directly into the containing PaintCanvas, when possible.

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

Index: third_party/WebKit/Source/platform/graphics/paint/PaintRecordBuilder.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/PaintRecordBuilder.cpp b/third_party/WebKit/Source/platform/graphics/paint/PaintRecordBuilder.cpp
index 5c24e3cd4e80ae2accc48436e7269d29531d3beb..a6d69107d6de0c9570c1f5a1920395052c39a343 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/PaintRecordBuilder.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/PaintRecordBuilder.cpp
@@ -51,13 +51,23 @@ PaintRecordBuilder::~PaintRecordBuilder() {
 #endif
 }
 
-sk_sp<PaintRecord> PaintRecordBuilder::endRecording(
-    const PropertyTreeState& propertyTreeState) {
+sk_sp<PaintRecord> PaintRecordBuilder::endRecording() {
   m_context->beginRecording(m_bounds);
   m_paintController->commitNewDisplayItems();
-  m_paintController->paintArtifact().replay(m_bounds, *m_context,
-                                            propertyTreeState);
+  m_paintController->paintArtifact().replay(m_bounds, *m_context);
   return m_context->endRecording();
 }
 
+void PaintRecordBuilder::endRecording(
+    PaintCanvas& canvas,
+    const PropertyTreeState& propertyTreeState) {
+  if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
+    canvas.drawPicture(endRecording());
+  } else {
+    m_paintController->commitNewDisplayItems();
+    m_paintController->paintArtifact().replay(m_bounds, canvas,
+                                              propertyTreeState);
+  }
+}
+
 }  // namespace blink