Componentize sad_tab

chrome/browser/ui/chrome_sad_tab_client.cc

+// Copyright 2014 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/chrome_sad_tab_client.h"
+
+#include "chrome/browser/browser_shutdown.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/chrome_pages.h"
+
+ChromeSadTabClient::ChromeSadTabClient() {
+}
+
+ChromeSadTabClient::~ChromeSadTabClient() {
+}
+
+bool ChromeSadTabClient::IsInBrowserShutdown() {
+  return browser_shutdown::GetShutdownType() != browser_shutdown::NOT_VALID;
+}
+
+void ChromeSadTabClient::ShowFeedbackPage(
+    content::WebContents* web_contents,
+    const std::string& description_template,
+    const std::string& category_tag) {
+  chrome::ShowFeedbackPage(
+      chrome::FindBrowserWithWebContents(web_contents),
+      description_template,
+      category_tag);
+}