Remove various TabContents use from TabStripModel.

chrome/browser/ui/tabs/tab_strip_model.cc

Index: chrome/browser/ui/tabs/tab_strip_model.cc
diff --git a/chrome/browser/ui/tabs/tab_strip_model.cc b/chrome/browser/ui/tabs/tab_strip_model.cc
index 264fcf5fdbd8117112c93e7be46bdbd37a8fcea0..9b648e384460c756d4af9d0d3a39aee51dd4ea07 100644
--- a/chrome/browser/ui/tabs/tab_strip_model.cc
+++ b/chrome/browser/ui/tabs/tab_strip_model.cc
@@ -1139,11 +1139,10 @@ void TabStripModel::NotifyIfActiveTabChanged(WebContents* old_contents,
 }
 
 void TabStripModel::NotifyIfActiveOrSelectionChanged(
-    TabContents* old_contents,
+    WebContents* old_contents,
     NotifyTypes notify_types,
     const TabStripSelectionModel& old_model) {
-  NotifyIfActiveTabChanged(old_contents ? old_contents->web_contents() : NULL,
-                           notify_types);
+  NotifyIfActiveTabChanged(old_contents, notify_types);
 
   if (!selection_model().Equals(old_model)) {
     FOR_EACH_OBSERVER(TabStripModelObserver, observers_,
@@ -1154,11 +1153,11 @@ void TabStripModel::NotifyIfActiveOrSelectionChanged(
 void TabStripModel::SetSelection(
     const TabStripSelectionModel& new_model,
     NotifyTypes notify_types) {
-  TabContents* old_contents = GetActiveTabContents();
+  WebContents* old_contents = GetActiveWebContents();
   TabStripSelectionModel old_model;
   old_model.Copy(selection_model_);
   if (new_model.active() != selection_model_.active())
-    NotifyIfTabDeactivated(old_contents ? old_contents->web_contents() : NULL);
+    NotifyIfTabDeactivated(old_contents);
   selection_model_.Copy(new_model);
   NotifyIfActiveOrSelectionChanged(old_contents, notify_types, old_model);
 }