Move LayoutTree snapshots to blink.debug.layout.trees category

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 584ff1a06b286e597c6ab0567900970fa7de833e..fdcdd67f1844b3623ebe6e58fa95b6f5cb1b94de 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -1045,7 +1045,7 @@ void FrameView::layout()
             m_doFullPaintInvalidation |= layoutViewItem().shouldDoFullPaintInvalidationForNextLayout();
         }
 
-        TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), "LayoutTree",
+        TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout.trees"), "LayoutTree",
             this, TracedLayoutObject::create(*layoutView(), false));
 
         performLayout(inSubtreeLayout);
@@ -1061,7 +1061,7 @@ void FrameView::layout()
     // FIXME: Could find the common ancestor layer of all dirty subtrees and mark from there. crbug.com/462719
     layoutViewItem().enclosingLayer()->updateLayerPositionsAfterLayout();
 
-    TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout"), "LayoutTree",
+    TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(TRACE_DISABLED_BY_DEFAULT("blink.debug.layout.trees"), "LayoutTree",
         this, TracedLayoutObject::create(*layoutView(), true));
 
     layoutViewItem().compositor()->didLayout();