Improve metrics for display list canvas fallback reason

third_party/WebKit/Source/core/editing/Editor.cpp

Index: third_party/WebKit/Source/core/editing/Editor.cpp
diff --git a/third_party/WebKit/Source/core/editing/Editor.cpp b/third_party/WebKit/Source/core/editing/Editor.cpp
index c1d7b1601c31f25d33007acffabad03502910b9f..30c12496fe26f0d64e94f77aa55cfee98afed715 100644
--- a/third_party/WebKit/Source/core/editing/Editor.cpp
+++ b/third_party/WebKit/Source/core/editing/Editor.cpp
@@ -480,9 +480,10 @@ static PassRefPtr<Image> imageFromNode(const Node& node) {
   if (!layoutObject)
     return nullptr;
 
-  if (layoutObject->isCanvas())
-    return toHTMLCanvasElement(node).copiedImage(FrontBuffer,
-                                                 PreferNoAcceleration);
+  if (layoutObject->isCanvas()) {
+    return toHTMLCanvasElement(node).copiedImage(
+        FrontBuffer, PreferNoAcceleration, SnapshotReasonCopyToClipboard);
+  }
 
   if (layoutObject->isImage()) {
     LayoutImage* layoutImage = toLayoutImage(layoutObject);