Omnibox: Possibly Fix Rare OpenMatch Crash

chrome/browser/ui/omnibox/omnibox_edit_model.cc

Index: chrome/browser/ui/omnibox/omnibox_edit_model.cc
diff --git a/chrome/browser/ui/omnibox/omnibox_edit_model.cc b/chrome/browser/ui/omnibox/omnibox_edit_model.cc
index 5de37c2ee5205b95956ad55e2e7ae72b74bcd30a..2552d8acd88ff7f863604645ec8cdcdb48c167d3 100644
--- a/chrome/browser/ui/omnibox/omnibox_edit_model.cc
+++ b/chrome/browser/ui/omnibox/omnibox_edit_model.cc
@@ -573,6 +573,7 @@ void OmniboxEditModel::OpenMatch(const AutocompleteMatch& match,
   // open).
   if (popup_->IsOpen()) {
     const base::TimeTicks& now(base::TimeTicks::Now());
+    const content::WebContents* web_contents = controller_->GetWebContents();
     // TODO(sreeram): Handle is_temporary_text_set_by_instant_ correctly.
     AutocompleteLog log(
         autocomplete_controller_->input().text(),
@@ -580,7 +581,8 @@ void OmniboxEditModel::OpenMatch(const AutocompleteMatch& match,
         autocomplete_controller_->input().type(),
         popup_->selected_line(),
         -1,  // don't yet know tab ID; set later if appropriate
-        ClassifyPage(controller_->GetWebContents()->GetURL()),
+        web_contents ? ClassifyPage(web_contents->GetURL()) :
+            metrics::OmniboxEventProto_PageClassification_OTHER,
         now - time_user_first_modified_omnibox_,
         string16::npos,  // completed_length; possibly set later
         now - autocomplete_controller_->last_time_default_match_changed(),