Trace FrameTreeNode Snapshots

content/browser/frame_host/frame_tree_node.cc

Index: content/browser/frame_host/frame_tree_node.cc
diff --git a/content/browser/frame_host/frame_tree_node.cc b/content/browser/frame_host/frame_tree_node.cc
index 876be33a452102bfbf6ad7c88d0a43a5fb844afb..942307cfeb3038b10a70f47c7f091163c32532fc 100644
--- a/content/browser/frame_host/frame_tree_node.cc
+++ b/content/browser/frame_host/frame_tree_node.cc
@@ -192,6 +192,7 @@ void FrameTreeNode::SetCurrentURL(const GURL& url) {
   if (!has_committed_real_load_ && url != GURL(url::kAboutBlankURL))
     has_committed_real_load_ = true;
   current_url_ = url;
+  frame_tree_->TraceSnapshot();

[nasko, 2015/10/28 20:17:55]

Keep in mind that since the tracing here, it will snapshot every time there is a
pushState/popState/ref fragment change. If those are not desired, the check
needs to move back to Navigator.

[benjhayden, 2015/10/28 20:50:50]

Good to know!
If it turns out that these snapshots significantly affect trace file size, then
I'll investigate how to capture fewer unnecessary snapshots, starting here.

 }
 
 void FrameTreeNode::SetCurrentOrigin(const url::Origin& origin) {