Trace LayoutObject src attributes and parent frames

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index a05b332a0d84556a70e06fd18f74a946b61c7ab5..b366319666d46dfefca755dc884eb5664678aaeb 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -107,6 +107,8 @@
 #include "platform/text/TextStream.h"
 #include "public/platform/WebDisplayItemList.h"
 #include "public/platform/WebFrameScheduler.h"
+#include "public/web/WebLocalFrame.h"
+#include "web/WebLocalFrameImpl.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/TemporaryChange.h"
@@ -962,6 +964,8 @@ void FrameView::layout()
         return;
     }
 
+    WebLocalFrame* wlframe = WebLocalFrameImpl::fromFrame(frame());
+
     FontCachePurgePreventer fontCachePurgePreventer;
     {
         TemporaryChange<bool> changeSchedulingEnabled(m_layoutSchedulingEnabled, false);
@@ -1032,7 +1036,8 @@ void FrameView::layout()
         }
 
         TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), "LayoutTree",

[benjhayden, 2016/06/03 18:12:28]

comment out for puf

-            this, TracedLayoutObject::create(*layoutView(), false));
+            TRACE_ID_WITH_SCOPE("LayoutTree", wlframe),
+            TracedLayoutObject::create(*layoutView(), false));
 
         performLayout(inSubtreeLayout);
 
@@ -1048,7 +1053,8 @@ void FrameView::layout()
     layoutView()->enclosingLayer()->updateLayerPositionsAfterLayout();
 
     TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), "LayoutTree",
-        this, TracedLayoutObject::create(*layoutView(), true));
+        TRACE_ID_WITH_SCOPE("LayoutTree", wlframe),
+        TracedLayoutObject::create(*layoutView(), true));
 
     layoutViewItem().compositor()->didLayout();