Change cc::ElementId to be a uint64_t

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

Index: third_party/WebKit/Source/platform/graphics/paint/TransformPaintPropertyNode.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/TransformPaintPropertyNode.cpp b/third_party/WebKit/Source/platform/graphics/paint/TransformPaintPropertyNode.cpp
index 6260949e4e7dd0c9f1aa81cc718d4a00608cafce..54410ea27f0f7c448972d0cbc9c489823a43a61a 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/TransformPaintPropertyNode.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/TransformPaintPropertyNode.cpp
@@ -39,12 +39,12 @@ String TransformPaintPropertyNode::ToString() const {
   auto transform = String::Format(
       "parent=%p transform=%s origin=%s flattensInheritedTransform=%s "
       "renderingContextId=%x directCompositingReasons=%s "
-      "compositorElementId=(%d, %d)",
+      "compositorElementId=%lu",
       parent_.Get(), matrix_.ToString().Ascii().data(),
       origin_.ToString().Ascii().data(),
       flattens_inherited_transform_ ? "yes" : "no", rendering_context_id_,
       CompositingReasonsAsString(direct_compositing_reasons_).Ascii().data(),
-      compositor_element_id_.primaryId, compositor_element_id_.secondaryId);
+      static_cast<unsigned long>(compositor_element_id_.id));

[suzyh_UTC10 (ex-contributor), 2017/05/08 01:04:15]

Ditto here, is the cast required?

[chrishtr, 2017/05/08 16:32:13]

Ditto.

   if (scroll_)
     return transform + " scroll=" + scroll_->ToString();
   return transform;