Add support for highlighting menu items

chrome/android/java/res/values/colors.xml

Index: chrome/android/java/res/values/colors.xml
diff --git a/chrome/android/java/res/values/colors.xml b/chrome/android/java/res/values/colors.xml
index 5a9ca83a07be2607c6bce585dff3ae0483d9792b..401bb097f369bb1c31aa2fc0107098296281c346 100644
--- a/chrome/android/java/res/values/colors.xml
+++ b/chrome/android/java/res/values/colors.xml
@@ -194,6 +194,10 @@
     <color name="payments_section_chevron">#b2b2b2</color>
     <color name="payments_section_separator">#e0e0e0</color>
 
+    <!-- In Product Help Colors -->
+    <color name="app_menu_highlight_color_light">#4285F4</color>

[David Trainor- moved to gerrit, 2017/03/27 21:58:57]

These are existing colors already.  Will move.

+    <color name="app_menu_highlight_color_dark">#F5F5F5</color>
+
     <!-- Other colors -->
     <color name="selectable_list_item_highlight_color">#804281f4</color>
     <color name="media_viewer_bg">#000000</color>