Make TabContents own its infobar delegates....

chrome/browser/extensions/extension_infobar_delegate.cc

Index: chrome/browser/extensions/extension_infobar_delegate.cc
===================================================================
--- chrome/browser/extensions/extension_infobar_delegate.cc	(revision 65711)
+++ chrome/browser/extensions/extension_infobar_delegate.cc	(working copy)
@@ -18,10 +18,8 @@
                                                    const Extension* extension,
                                                    const GURL& url)
     : InfoBarDelegate(tab_contents),
-      observer_(NULL),
       extension_(extension),
-      tab_contents_(tab_contents),
-      closing_(false) {
+      tab_contents_(tab_contents) {
   ExtensionProcessManager* manager =
       browser->profile()->GetExtensionProcessManager();
   extension_host_.reset(manager->CreateInfobar(url, browser));
@@ -34,8 +32,6 @@
 }
 
 ExtensionInfoBarDelegate::~ExtensionInfoBarDelegate() {
-  if (observer_)
-    observer_->OnDelegateDeleted();
 }
 
 bool ExtensionInfoBarDelegate::EqualsDelegate(InfoBarDelegate* delegate) const {
@@ -59,7 +55,7 @@
 }
 
 ExtensionInfoBarDelegate*
-ExtensionInfoBarDelegate::AsExtensionInfoBarDelegate() {
+    ExtensionInfoBarDelegate::AsExtensionInfoBarDelegate() {
   return this;
 }