[Cleanup] Factor out common code.

chrome/browser/sessions/session_restore_delegate.cc

Index: chrome/browser/sessions/session_restore_delegate.cc
diff --git a/chrome/browser/sessions/session_restore_delegate.cc b/chrome/browser/sessions/session_restore_delegate.cc
index f562d944ff296405d9484b1807926f66a1bed211..55d4001227ce74ec06d450daa5b2504f5e0ea255 100644
--- a/chrome/browser/sessions/session_restore_delegate.cc
+++ b/chrome/browser/sessions/session_restore_delegate.cc
@@ -11,33 +11,11 @@
 #include "base/metrics/field_trial.h"
 #include "chrome/browser/sessions/session_restore_stats_collector.h"
 #include "chrome/browser/sessions/tab_loader.h"
+#include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/common/url_constants.h"
 #include "components/favicon/content/content_favicon_driver.h"
 #include "content/public/browser/web_contents.h"
 
-namespace {
-
-bool IsInternalPage(const GURL& url) {
-  // There are many chrome:// UI URLs, but only look for the ones that users
-  // are likely to have open. Most of the benefit is from the NTP URL.
-  const char* const kReloadableUrlPrefixes[] = {
-      chrome::kChromeUIDownloadsURL,
-      chrome::kChromeUIHistoryURL,
-      chrome::kChromeUINewTabURL,
-      chrome::kChromeUISettingsURL,
-  };
-  // Prefix-match against the table above. Use strncmp to avoid allocating
-  // memory to convert the URL prefix constants into std::strings.
-  for (size_t i = 0; i < arraysize(kReloadableUrlPrefixes); ++i) {
-    if (!strncmp(url.spec().c_str(), kReloadableUrlPrefixes[i],
-                 strlen(kReloadableUrlPrefixes[i])))
-      return true;
-  }
-  return false;
-}
-
-}  // namespace
-
 SessionRestoreDelegate::RestoredTab::RestoredTab(content::WebContents* contents,
                                                  bool is_active,
                                                  bool is_app,
@@ -45,9 +23,9 @@ SessionRestoreDelegate::RestoredTab::RestoredTab(content::WebContents* contents,
     : contents_(contents),
       is_active_(is_active),
       is_app_(is_app),
-      is_internal_page_(IsInternalPage(contents->GetLastCommittedURL())),
-      is_pinned_(is_pinned) {
-}
+      is_internal_page_(
+          chrome::IsInternalPage(contents->GetLastCommittedURL())),
+      is_pinned_(is_pinned) {}
 
 bool SessionRestoreDelegate::RestoredTab::operator<(
     const RestoredTab& right) const {