Initial skeleton of custom layouts for Web Notifications.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 2fe65245db24cb449626cdfb6fe9d7d92ed11b39..cb6c7183debbdc1885053e9c171d5eb7973ce10d 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2122,6 +2122,14 @@ const Experiment kExperiments[] = {
      IDS_FLAGS_PPAPI_WIN32K_LOCKDOWN_DESCRIPTION, kOsWin,
      MULTI_VALUE_TYPE(kPpapiWin32kLockdown)},
 #endif  // defined(OS_WIN)
+#if defined(ENABLE_NOTIFICATIONS) && defined(OS_ANDROID)
+    {"enable-notifications-custom-layouts",
+     IDS_FLAGS_ENABLE_NOTIFICATIONS_CUSTOM_LAYOUTS_NAME,
+     IDS_FLAGS_ENABLE_NOTIFICATIONS_CUSTOM_LAYOUTS_DESCRIPTION,
+     kOsAndroid,
+     ENABLE_DISABLE_VALUE_TYPE(switches::kEnableNotificationsCustomLayouts,
+                               switches::kDisableNotificationsCustomLayouts)},
+#endif  // defined(ENABLE_NOTIFICATIONS) && defined(OS_ANDROID)
     // NOTE: Adding new command-line switches requires adding corresponding
     // entries to enum "LoginCustomFlags" in histograms.xml. See note in
     // histograms.xml and don't forget to run AboutFlagsHistogramTest unit test.