Android changes for languages picker.

In this Cl translatable content languages are used in java TranslateCompactInfobar to create a new menu item with the native name and divider after the last element.
screenshot after: https://screenshot.googleplex.com/7W9Y2ztFdwWhLBy

Bug: 1173577
Change-Id: I7a40dcc0356c2238dc3385bd077686b111313927
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2680273
Commit-Queue: Basia Zimirska <[email protected]>
Reviewed-by: Colin Blundell <[email protected]>
Reviewed-by: Trevor  Perrier <[email protected]>
Cr-Commit-Position: refs/heads/master@{#857307}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 5c92df17..0bd8e95 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -76,6 +76,12 @@
 const char kConditionalTabStripAndroidDescription[] =
     "Allows users to access conditional tab strip.";
 
+const char kContentLanguagesInLanguagePickerName[] =
+    "Content languages in language picker";
+const char kContentLanguagesInLanguagePickerDescription[] =
+    "Enables bringing user's content languages that are translatable to the "
+    "top of the list with all languages shown in the translate menu";
+
 const char kConversionMeasurementApiName[] = "Conversion Measurement API";
 const char kConversionMeasurementApiDescription[] =
     "Enables usage of the Conversion Measurement API. Requires "