Deprecate Alt+Shift+K and replace it by Search+Shift+K

ash/ash_strings.grd

Index: ash/ash_strings.grd
diff --git a/ash/ash_strings.grd b/ash/ash_strings.grd
index 3925c81c262ca9bfa5c883d8660a9d135927f62f..8389de91177557d9bf166d777c93306fbba77e71 100644
--- a/ash/ash_strings.grd
+++ b/ash/ash_strings.grd
@@ -1013,6 +1013,12 @@ Press Ctrl+Alt+Z to disable.
       <message name="IDS_SHORTCUT_TASK_MANAGER_NEW" desc="the new shortcut to open the task manager.">
         Search+Esc
       </message>
+      <message name="IDS_SHORTCUT_IME_BUBBLE_OLD" desc="the old deprecated shortcut to show the input options menu bubble in the shelf.">
+        Alt+Shift+K
+      </message>
+      <message name="IDS_SHORTCUT_IME_BUBBLE_NEW" desc="the new shortcut to show the input options menu bubble in the shelf.">
+        Search+Shift+K
+      </message>
       <message name="IDS_DEPRECATED_LOCK_SCREEN_MSG"
                desc="Notification message to tell users about the deprecation of Ctrl+Shift+L shortcut to lock the screen.">
         The shortcut to lock the screen has changed. Please use <ph name="NEW_SHORTCUT">$1<ex>Search+L</ex></ph> instead of <ph name="OLD_SHORTCUT">$2<ex>Ctrl+Shift+L</ex></ph>.
@@ -1021,6 +1027,10 @@ Press Ctrl+Alt+Z to disable.
                desc="Notification message to tell users about the deprecation of Shift+ESC shortcut to show the task manager.">
         The shortcut to open the task manager has changed. Please use <ph name="NEW_SHORTCUT">$1<ex>Search+Esc</ex></ph> instead of <ph name="OLD_SHORTCUT">$2<ex>Shift+Esc</ex></ph>.
       </message>
+      <message name="IDS_DEPRECATED_SHOW_IME_BUBBLE_MSG"
+               desc="Notification message to tell users about the deprecation of Alt+Shift+K shortcut to show the input options menu bubble in the shelf.">
+        The shortcut to show the input options menu bubble in the shelf has changed. Please use <ph name="NEW_SHORTCUT">$1<ex>Search+Shift+K</ex></ph> instead of <ph name="OLD_SHORTCUT">$2<ex>Alt+Shift+K</ex></ph>.
+      </message>
 
       <!-- Notification that an accelerator was pressed, so the user knows how to toggle it back -->
       <message name="IDS_HIGH_CONTRAST_ACCEL_MSG"