Add feature flag for ChromeVox language switching feature.

This change only creates the flag, it does not implement any
functionality.

Change-Id: I501dc8b27c3906c61c7549e89c33cb15360e15c1
Bug: 923068
Reviewed-on: https://chromium-review.googlesource.com/c/1415255
Commit-Queue: Akihiro Ota <[email protected]>
Reviewed-by: David Tseng <[email protected]>
Reviewed-by: Elly Fong-Jones <[email protected]>
Cr-Commit-Position: refs/heads/master@{#624187}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 86cbbb8b..947fd63 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -3358,6 +3358,12 @@
 const char kEolNotificationDescription[] =
     "Disable Notifcation when Device is End of Life.";
 
+const char kExperimentalAccessibilityChromeVoxLanguageSwitchingName[] =
+    "Enable experimental ChromeVox language switching.";
+const char kExperimentalAccessibilityChromeVoxLanguageSwitchingDescription[] =
+    "Enable ChromeVox language switching, which changes ChromeVox's "
+    "output language upon detection of new language.";
+
 const char kFileManagerTouchModeName[] = "Files App. touch mode";
 const char kFileManagerTouchModeDescription[] =
     "Touchscreen-specific interactions of the Files app.";