MD History: promote menu button to show clear browsing data in narrow mode

third_party/polymer/v1_0/components-chromium/paper-tooltip/paper-tooltip-extracted.js

 Polymer({
       is: 'paper-tooltip',
 
       hostAttributes: {
         role: 'tooltip',
         tabindex: -1
       },
 
       behaviors: [
         Polymer.NeonAnimationRunnerBehavior
@@ skipping 86 matching lines @@
         },
 
         _showing: {
           type: Boolean,
           value: false
         }
       },
 
       listeners: {
         'neon-animation-finish': '_onAnimationFinish',
-        'mouseenter': 'hide'
       },
 
       /**
        * Returns the target element that this tooltip is anchored to. It is
        * either the element given by the `for` attribute, or the immediate parent
        * of the tooltip.
        */
       get target () {
         var parentNode = Polymer.dom(this).parentNode;
         // If the parentNode is a document fragment, then we need to use the host.
@@ skipping 14 matching lines @@
         this._target = this.target;
 
         if (this.manualMode)
           return;
 
         this.listen(this._target, 'mouseenter', 'show');
         this.listen(this._target, 'focus', 'show');
         this.listen(this._target, 'mouseleave', 'hide');
         this.listen(this._target, 'blur', 'hide');
         this.listen(this._target, 'tap', 'hide');
+        this.listen(this, 'mouseenter', 'hide');

[Dan Beam, 2016/08/25 01:24:43]

this already landed in Polymer, I just don't really feel like rolling right
before a branch
https://github.com/PolymerElements/paper-tooltip/issues/85

[tsergeant, 2016/08/25 04:51:00]

Acknowledged.

       },
 
       detached: function() {
         if (this._target && !this.manualMode) {
           this.unlisten(this._target, 'mouseenter', 'show');
           this.unlisten(this._target, 'focus', 'show');
           this.unlisten(this._target, 'mouseleave', 'hide');
           this.unlisten(this._target, 'blur', 'hide');
           this.unlisten(this._target, 'tap', 'hide');
+          this.unlisten(this, 'mouseenter', 'hide');
         }
       },
 
       show: function() {
         // If the tooltip is already showing, there's nothing to do.
         if (this._showing)
           return;
 
         if (Polymer.dom(this).textContent.trim() === '')
           return;
@@ skipping 98 matching lines @@
         }
 
       },
 
       _onAnimationFinish: function() {
         this._animationPlaying = false;
         if (!this._showing) {
           this.toggleClass('hidden', true, this.$.tooltip);
         }
       },
-    });
+    });