Bring the feedback button to the Mac sad tab

chrome/browser/ui/sad_tab_helper.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/sad_tab_helper.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/ui/sad_tab.h"
@@ skipping 23 matching lines @@
 }  // namespace
 
 SadTabHelper::~SadTabHelper() {
 }
 
 SadTabHelper::SadTabHelper(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents) {
 }
 
 void SadTabHelper::RenderViewReady() {
-  if (sad_tab_) {
-    sad_tab_->Close();
-    sad_tab_.reset();
-  }
+  sad_tab_.reset();
 }
 
 void SadTabHelper::RenderProcessGone(base::TerminationStatus status) {
   // Only show the sad tab if we're not in browser shutdown, so that WebContents
   // objects that are not in a browser (e.g., HTML dialogs) and thus are
   // visible do not flash a sad tab page.
   if (browser_shutdown::GetShutdownType() != browser_shutdown::NOT_VALID)
     return;
 
   if (sad_tab_)
     return;
 
   if (chrome::SadTab::ShouldShow(status))
     InstallSadTab(status);
 }
 
 void SadTabHelper::InstallSadTab(base::TerminationStatus status) {
   sad_tab_.reset(chrome::SadTab::Create(
       web_contents(), SadTabKindFromTerminationStatus(status)));
-  sad_tab_->Show();
 }