Update Grave symbol in keyboard shortcut helper.

Grave is '`', not '~'.

Bug: 286538767
Test: NA
Flag: NA
Change-Id: I049ba2b14cfb948754edd4d6cfd4dd0cee6068c8
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/KeyboardShortcutListSearch.java b/packages/SystemUI/src/com/android/systemui/statusbar/KeyboardShortcutListSearch.java
index 9279077..cfd10fc 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/KeyboardShortcutListSearch.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/KeyboardShortcutListSearch.java
@@ -285,7 +285,7 @@
         mSpecialCharacterNames.put(
                 KeyEvent.KEYCODE_NUM_LOCK, context.getString(R.string.keyboard_key_num_lock));
         mSpecialCharacterNames.put(KeyEvent.KEYCODE_MINUS, "-");
-        mSpecialCharacterNames.put(KeyEvent.KEYCODE_GRAVE, "~");
+        mSpecialCharacterNames.put(KeyEvent.KEYCODE_GRAVE, "`");
         mSpecialCharacterNames.put(KeyEvent.KEYCODE_EQUALS, "=");
 
         mSpecialCharacterNames.put(KeyEvent.KEYCODE_NUMPAD_0,
@@ -493,7 +493,7 @@
                         Arrays.asList(
                                 Pair.create(KeyEvent.KEYCODE_SLASH, KeyEvent.META_META_ON))),
                 /* Back: go back to previous state (back button) */
-                /* Meta + ~, Meta + backspace, Meta + left arrow */
+                /* Meta + Grave, Meta + backspace, Meta + left arrow */
                 new ShortcutKeyGroupMultiMappingInfo(
                         context.getString(R.string.group_system_go_back),
                         Arrays.asList(