Clean up the mini keyboard for the Double low-9 quotation mark U+201E key

bug: 5310432
Change-Id: I15fe2e9854e9bcf43e833c786feffcb1a081c565
diff --git a/java/res/xml/kbd_rows_symbols.xml b/java/res/xml/kbd_rows_symbols.xml
index e0ede8b..2235f4d 100644
--- a/java/res/xml/kbd_rows_symbols.xml
+++ b/java/res/xml/kbd_rows_symbols.xml
@@ -101,8 +101,8 @@
         <Key
             latin:keyLabel="!"
             latin:moreKeys="¡" />
-        <!-- Note: DroidSans doesn't have double-high-reversed-quotation '\u201f' glyph. -->
-        <!-- latin:moreKeys="“,”,„,‟,«,»" -->
+        <!-- Note: Neither DroidSans nor Roboto have a glyph for ‟ Double high-reversed-9 quotation mark U+201F. -->
+            <!-- latin:moreKeys="“,”,„,‟,«,»" -->
         <Key
             latin:keyLabel="&quot;"
             latin:moreKeys="“,”,«,»"
diff --git a/java/res/xml/kbd_symbols_shift_row4.xml b/java/res/xml/kbd_symbols_shift_row4.xml
index c8d5293..99fa80a 100644
--- a/java/res/xml/kbd_symbols_shift_row4.xml
+++ b/java/res/xml/kbd_symbols_shift_row4.xml
@@ -32,9 +32,11 @@
                 <Key
                     latin:keyStyle="toAlphaKeyStyle"
                     latin:keyWidth="15%p" />
+                <!-- Note: Neither DroidSans nor Roboto have a glyph for ‟ Double high-reversed-9 quotation mark U+201F. -->
+                    <!-- latin:keyLabelOption="hasPopupHint" -->
+                    <!-- latin:moreKeys="‟" -->
                 <Key
                     latin:keyLabel="„"
-                    latin:moreKeys="“,”,„,‟,«,»,‘,’,‚,‛"
                     latin:keyStyle="functionalKeyStyle" />
                 <Key
                     latin:keyStyle="spaceKeyStyle"
@@ -53,9 +55,11 @@
                     latin:keyWidth="13.75%p" />
                 <include
                     latin:keyboardLayout="@xml/kbd_settings_or_tab" />
+                <!-- Note: Neither DroidSans nor Roboto have a glyph for ‟ Double high-reversed-9 quotation mark U+201F. -->
+                    <!-- latin:keyLabelOption="hasPopupHint" -->
+                    <!-- latin:moreKeys="‟" -->
                 <Key
                     latin:keyLabel="„"
-                    latin:moreKeys="“,”,„,‟,«,»,‘,’,‚,‛"
                     latin:keyWidth="9.2%p"
                     latin:keyStyle="functionalKeyStyle" />
                 <Key