[Mac/GN] Define a GN file for all the XIB files.

chrome/app/nibs/BUILD.gn

Index: chrome/app/nibs/BUILD.gn
diff --git a/chrome/app/nibs/BUILD.gn b/chrome/app/nibs/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..574287232bee572a7f433fbfab232bb33212a947
--- /dev/null
+++ b/chrome/app/nibs/BUILD.gn
@@ -0,0 +1,55 @@
+# Copyright 2016 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.
+
+import("//build/config/mac/rules.gni")
+
+# GYP version: chrome/chrome_nibs.gypi
+mac_xib_bundle_data("chrome_xibs") {
+  sources = [
+    "AppMenu.xib",
+    "AvatarMenuItem.xib",
+    "BookmarkAllTabs.xib",
+    "BookmarkBar.xib",
+    "BookmarkBarFolderWindow.xib",
+    "BookmarkBubble.xib",
+    "BookmarkEditor.xib",
+    "BookmarkNameFolder.xib",
+    "CollectedCookies.xib",
+    "ContentBlockedCookies.xib",
+    "ContentBlockedDownloads.xib",
+    "ContentBlockedGeolocation.xib",
+    "ContentBlockedMIDISysEx.xib",
+    "ContentBlockedMedia.xib",
+    "ContentBlockedMixedScript.xib",
+    "ContentBlockedPlugins.xib",
+    "ContentBlockedPopups.xib",
+    "ContentBlockedSimple.xib",
+    "ContentProtocolHandlers.xib",
+    "CookieDetailsView.xib",
+    "DevicePermissionsPrompt.xib",
+    "DownloadItem.xib",
+    "DownloadShelf.xib",
+    "EditSearchEngine.xib",
+    "ExclusiveAccessBubble.xib",
+    "ExtensionInstallPrompt.xib",
+    "ExtensionInstallPromptNoWarnings.xib",
+    "ExtensionInstallPromptWebstoreData.xib",
+    "ExtensionInstalledBubble.xib",
+    "FindBar.xib",
+    "FirstRunBubble.xib",
+    "FirstRunDialog.xib",
+    "GlobalErrorBubble.xib",
+    "HttpAuthLoginSheet.xib",
+    "HungRendererDialog.xib",
+    "ImportProgressDialog.xib",
+    "InfoBar.xib",
+    "MainMenu.xib",
+    "OneClickSigninBubble.xib",
+    "OneClickSigninDialog.xib",
+    "Panel.xib",
+    "SaveAccessoryView.xib",
+    "TaskManager.xib",
+    "Toolbar.xib",
+  ]
+}