Adds unit tests for swipe flick.

ui/keyboard/resources/elements/kb-keyboard.html

 <!--
   -- Copyright 2013 The Chromium Authors. All rights reserved.
   -- Use of this source code is governed by a BSD-style license that can be
   -- found in the LICENSE file.
   -->
 
 <polymer-element name="kb-keyboard" on-key-over="{{keyOver}}"
     on-key-up="{{keyUp}}" on-key-down="{{keyDown}}"
     on-key-longpress="{{keyLongpress}}" on-pointerup="{{up}}"
     on-pointerdown="{{down}}" on-pointerout="{{out}}"
@@ skipping 333 matching lines @@
         if (toKeyset) {
           this.keyset = toKeyset;
           this.activeKeyset.nextKeyset = detail.nextKeyset;
           return true;
         }
         return false;
       },
 
       ready: function() {
         this.voiceInput_ = new VoiceInput(this);
-        this.swipeHandler = this.updateSwipeTracker.bind(this);
+        this.swipeHandler = this.move.bind(this);
       },
 
       /**
        * Registers a callback for state change events. Lazy initializes a
        * mutation observer used to detect when the keyset selection is changed.
        * @param{!Function} callback Callback function to register.
        */
       addKeysetChangedObserver: function(callback) {
         if (!this.keysetChangedObserver) {
           var target = this.$.content;
@@ skipping 100 matching lines @@
           this.keyTyped(detail);
           return;
         }
       },
 
       /**
        * This function is bound to swipeHandler. Updates the current swipe
        * status so that PointerEvents can be converted to Swipe events.
        * @param {PointerEvent} event.
        */
-      updateSwipeTracker: function(event) {
+      move: function(event) {
         if (!swipeTracker.update(event))
           return;
         // Conversion was successful, swipe is now in progress.
         swipeInProgress = true;
         if (this.lastPressedKey) {
           this.lastPressedKey.classList.remove('active');
           this.lastPressedKey = null;
         }
         this.onSwipeUpdate(swipeTracker.populateDetails(false));
       },
@@ skipping 494 matching lines @@
              }
           }
         }
         if (keysetsLoaded)
           console.error('No default keyset found for ' + this.layout);
         return false;
       }
     });
   </script>
 </polymer-element>