Update Polymer from 1.1.4 -> 1.1.5

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

Index: third_party/polymer/v1_0/components-chromium/paper-tabs/paper-tabs.html
diff --git a/third_party/polymer/v1_0/components-chromium/paper-tabs/paper-tabs.html b/third_party/polymer/v1_0/components-chromium/paper-tabs/paper-tabs.html
index cc52ea66d1ff30ba92514c7e931ef2a4657b6532..59483f37152580c2dd9f4acd824acd7c23ffed99 100644
--- a/third_party/polymer/v1_0/components-chromium/paper-tabs/paper-tabs.html
+++ b/third_party/polymer/v1_0/components-chromium/paper-tabs/paper-tabs.html
@@ -18,6 +18,8 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 <link rel="import" href="paper-tab.html">
 
 <!--
+Material design: [Tabs](https://www.google.com/design/spec/components/tabs.html)
+
 `paper-tabs` makes it easy to explore and switch between different views or functional aspects of
 an app, or to browse categorized data sets.
 
@@ -123,6 +125,7 @@ Custom property | Description | Default
 
     .not-visible {
       opacity: 0;
+      cursor: default;
     }
 
     paper-icon-button {
@@ -170,7 +173,7 @@ Custom property | Description | Default
 
   <template>
 
-    <paper-icon-button icon="paper-tabs:chevron-left" class$="[[_computeScrollButtonClass(_leftHidden, scrollable, hideScrollButtons)]]" on-up="_onScrollButtonUp" on-down="_onLeftScrollButtonDown"></paper-icon-button>
+    <paper-icon-button icon="paper-tabs:chevron-left" class$="[[_computeScrollButtonClass(_leftHidden, scrollable, hideScrollButtons)]]" on-up="_onScrollButtonUp" on-down="_onLeftScrollButtonDown" tabindex="-1"></paper-icon-button>
 
     <div id="tabsContainer" class="flex" on-track="_scroll" on-down="_down">
 
@@ -184,7 +187,7 @@ Custom property | Description | Default
 
     </div>
 
-    <paper-icon-button icon="paper-tabs:chevron-right" class$="[[_computeScrollButtonClass(_rightHidden, scrollable, hideScrollButtons)]]" on-up="_onScrollButtonUp" on-down="_onRightScrollButtonDown"></paper-icon-button>
+    <paper-icon-button icon="paper-tabs:chevron-right" class$="[[_computeScrollButtonClass(_rightHidden, scrollable, hideScrollButtons)]]" on-up="_onScrollButtonUp" on-down="_onRightScrollButtonDown" tabindex="-1"></paper-icon-button>
 
   </template>