Trace FrameTreeNode Snapshots

content/browser/frame_host/frame_tree_node.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/frame_tree_node.h"
 
 #include <queue>
 
 #include "base/command_line.h"
 #include "base/profiler/scoped_tracker.h"
@@ skipping 174 matching lines @@
     if (!opener_observer_)
       opener_observer_ = make_scoped_ptr(new OpenerDestroyedObserver(this));
     opener_->AddObserver(opener_observer_.get());
   }
 }
 
 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) {
   if (!origin.IsSameOriginWith(replication_state_.origin))
     render_manager_.OnDidUpdateOrigin(origin);
   replication_state_.origin = origin;
 }
 
 void FrameTreeNode::SetFrameName(const std::string& name) {
   if (name != replication_state_.name)
@@ skipping 172 matching lines @@
   // TODO(nasko): see if child frames should send IPCs in site-per-process
   // mode.
   if (!IsMainFrame())
     return true;
 
   render_manager_.Stop();
   return true;
 }
 
 }  // namespace content