Enables the user to select multiple languages for spellchecking (UI)

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 5b41ff4afdbeed6616470a552c57f181ad2d0774..37e384e80daac572682dc2828b5123ba32961a65 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2415,6 +2415,17 @@ const Experiment kExperiments[] = {
                               switches::kDisableAppInfoDialogMac)
   },
 #endif
+#if defined(ENABLE_SPELLCHECK) && \
+    (defined(OS_LINUX) || defined(OS_WIN) || defined(OS_CHROMEOS))
+  {
+    "enable-multilingual-spellchecker",
+    IDS_FLAGS_ENABLE_MULTILINGUAL_SPELLCHECKER_NAME,
+    IDS_FLAGS_ENABLE_MULTILINGUAL_SPELLCHECKER_DESCRIPTION,
+    kOsWin | kOsLinux | kOsCrOS,
+    SINGLE_VALUE_TYPE(switches::kEnableMultilingualSpellChecker)
+  },
+#endif
+
   // 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.