Adds some debugging code in hopes of figuring out why we're

chrome/browser/tabs/tab_strip_model.cc

Index: chrome/browser/tabs/tab_strip_model.cc
diff --git a/chrome/browser/tabs/tab_strip_model.cc b/chrome/browser/tabs/tab_strip_model.cc
index c127254aa290e66c388b7f53e87b583ef093fd23..5e877c13a615337574ff3894aaf5c99135c829d1 100644
--- a/chrome/browser/tabs/tab_strip_model.cc
+++ b/chrome/browser/tabs/tab_strip_model.cc
@@ -209,7 +209,12 @@ TabContentsWrapper* TabStripModel::DetachTabContentsAt(int index) {
   DCHECK(ContainsIndex(index));
 
   TabContentsWrapper* removed_contents = GetContentsAt(index);
-  int next_selected_index = order_controller_->DetermineNewSelectedIndex(index);
+  // TODO(sky): nuke reason and old_data when we figure out what is causing
+  // 34135.
+  volatile int reason = 0;
+  int next_selected_index =
+      order_controller_->DetermineNewSelectedIndex(index, &reason);
+  volatile TabContentsData old_data = *contents_data_.at(index);
   delete contents_data_.at(index);
   contents_data_.erase(contents_data_.begin() + index);
   if (empty())