[Offline pages] Removes the functionality to get bookmark ID from offline URL

chrome/browser/android/offline_pages/offline_page_utils.cc

Index: chrome/browser/android/offline_pages/offline_page_utils.cc
diff --git a/chrome/browser/android/offline_pages/offline_page_utils.cc b/chrome/browser/android/offline_pages/offline_page_utils.cc
index c15d2ba3079c60ba7137be12538b3ef6cb65a65a..e53d52440a79732ef9929bf96a6737f86c1aca09 100644
--- a/chrome/browser/android/offline_pages/offline_page_utils.cc
+++ b/chrome/browser/android/offline_pages/offline_page_utils.cc
@@ -94,26 +94,6 @@ GURL OfflinePageUtils::GetOnlineURLForOfflineURL(
 }
 
 // static
-int64_t OfflinePageUtils::GetBookmarkIdForOfflineURL(
-    content::BrowserContext* browser_context,
-    const GURL& offline_url) {
-  const OfflinePageItem* offline_page =
-      GetOfflinePageForOfflineURL(browser_context, offline_url);
-  if (!offline_page)
-    return -1;
-
-  if (offline_page->client_id.name_space != offline_pages::kBookmarkNamespace) {
-    return -1;
-  }
-
-  int64_t result;
-  if (base::StringToInt64(offline_page->client_id.id, &result)) {
-    return result;
-  }
-  return -1;
-}
-
-// static
 bool OfflinePageUtils::IsOfflinePage(content::BrowserContext* browser_context,
                                      const GURL& offline_url) {
   return GetOfflinePageForOfflineURL(browser_context, offline_url) != nullptr;