Merge pull request #20485 from RudyLu/keyboard/Bug1013739-persistent_…

…alternativeMenu_master

Bug 1013739 - [Dolphin][Flame][FFOS 1.4]Long touch the build-in keyboard
r=timdream

apps/keyboard/js/keyboard.js

@@ -1590,6 +1590,8 @@ function hideKeyboard() {
   settingsPromiseManager.set({
     'keyboard.current': undefined
   });
+
+  clearTouchedKeys();
 }
 
 // Resize event handler
@@ -1757,6 +1759,11 @@ function clearTouchedKeys() {
 
   hideAlternatives();
   touchedKeys = {};
+
+  // Reset all the pending actions here.
+  clearTimeout(deleteTimeout);
+  clearInterval(deleteInterval);
+  clearTimeout(menuTimeout);
 }
 
 // Hide the keyboard via input method API