[Polymer] update paper-slider for RTL support

This CL applies a pull request submitted to Polymer to add RTL support
for paper-sliders.

BUG=696437
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2801193002
Cr-Commit-Position: refs/heads/master@{#462953}

third_party/polymer/v1_0/bower.json

@@ -53,7 +53,7 @@
     "paper-radio-button": "PolymerElements/paper-radio-button#1.3.1",
     "paper-radio-group": "PolymerElements/paper-radio-group#1.2.0",
     "paper-ripple": "PolymerElements/paper-ripple#1.0.9",
-    "paper-slider": "PolymerElements/paper-slider#1.0.13",
+    "paper-slider": "PolymerElements/paper-slider#1.0.15",
     "paper-spinner": "PolymerElements/paper-spinner#1.2.0",
     "paper-styles": "PolymerElements/paper-styles#1.1.4",
     "paper-tabs": "PolymerElements/paper-tabs#1.6.2",

third_party/polymer/v1_0/components-chromium/paper-slider/bower.json

 {
   "name": "paper-slider",
-  "version": "1.0.13",
+  "version": "1.0.15",
   "description": "A material design-style slider",
   "license": "http://polymer.github.io/LICENSE.txt",
   "authors": "The Polymer Authors",

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

@@ -114,8 +114,10 @@ Polymer({
       },
 
       keyBindings: {
-        'left down pagedown home': '_decrementKey',
-        'right up pageup end': '_incrementKey'
+        'left': '_leftKey',
+        'right': '_rightKey',
+        'down pagedown home': '_decrementKey',
+        'up pageup end': '_incrementKey'
       },
 
       /**
@@ -213,7 +215,9 @@ Polymer({
           this._trackStart(event);
         }
 
-        var dx = Math.min(this._maxx, Math.max(this._minx, event.detail.dx));
+        var direction = this._isRTL ? -1 : 1;
+        var dx = Math.min(
+            this._maxx, Math.max(this._minx, event.detail.dx * direction));
         this._x = this._startx + dx;
 
         var immediateValue = this._calcStep(this._calcKnobPosition(this._x / this._w));
@@ -251,6 +255,9 @@ Polymer({
         this._w = this.$.sliderBar.offsetWidth;
         var rect = this.$.sliderBar.getBoundingClientRect();
         var ratio = (event.detail.x - rect.left) / this._w;
+        if (this._isRTL) {
+          ratio = 1 - ratio;
+        }
         var prevRatio = this.ratio;
 
         this._setTransiting(true);
@@ -292,6 +299,9 @@ Polymer({
         if (steps > maxMarkers) {
           steps = maxMarkers;
         }
+        if (steps < 0 || !isFinite(steps)) {
+          steps = 0;
+        }
         this._setMarkers(new Array(steps));
       },
 
@@ -315,6 +325,27 @@ Polymer({
         });
       },
 
+      get _isRTL() {
+        if (this.__isRTL === undefined) {
+          this.__isRTL = window.getComputedStyle(this)['direction'] === 'rtl';
+        }
+        return this.__isRTL;
+      },
+
+      _leftKey: function(event) {
+        if (this._isRTL)
+          this._incrementKey(event);
+        else
+          this._decrementKey(event);
+      },
+
+      _rightKey: function(event) {
+        if (this._isRTL)
+          this._decrementKey(event);
+        else
+          this._incrementKey(event);
+      },
+
       _incrementKey: function(event) {
         if (!this.disabled) {
           if (event.detail.key === 'end') {

third_party/polymer/v1_0/components-chromium/paper-slider/paper-slider.html

@@ -88,6 +88,11 @@ Custom property | Description | Default
       :host(:focus) {
         outline: none;
       }
+        
+      :host-context([dir="rtl"]) #sliderContainer {
+        -webkit-transform: scaleX(-1);
+        transform: scaleX(-1);
+      }
 
       #sliderContainer {
         position: relative;

third_party/web-animations-js/sources/.bower.json

@@ -35,7 +35,7 @@
     "tag": "2.2.2",
     "commit": "8cf9e3567c8a30e905e6a2aefb2ebf4120da6859"
   },
-  "_source": "https://github.com/web-animations/web-animations-js.git",
+  "_source": "git://github.com/web-animations/web-animations-js.git",
   "_target": "2.2.2",
   "_originalSource": "web-animations/web-animations-js"
 }
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