Remove unused android property on oobe elements.

This is a cleanup that removes unused "android" attribute:

1) cr_button does not support this attribute anymore, so
it does not have sense to have it in oobe_buttons.

2) There is no code that uses this attribute for oobe dialogs,
so it can be safely removed.

android attribute was introduced to make sure Assistant buttons
were looking android-like about 2 years ago.

TBR=alemate@chromium.org

Bug: 1000606
Change-Id: I97f1988de91c8945f915110c705e9cc2b83697e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1789706
Commit-Queue: Denis Kuznetsov <antrim@chromium.org>
Reviewed-by: Roman Sorokin [CET] <rsorokin@chromium.org>
Auto-Submit: Denis Kuznetsov <antrim@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695575}

chrome/browser/resources/chromeos/assistant_optin/assistant_loading.html

@@ -33,7 +33,7 @@
             disabled="[[buttonsDisabled]]">
           <div i18n-content="assistantOptinSkipButton"></div>
         </oobe-text-button>
-        <oobe-text-button id="retry-button" inverse android
+        <oobe-text-button id="retry-button" inverse
             on-tap="onRetryTap_" disabled="[[buttonsDisabled]]">
           <div i18n-content="assistantOptinRetryButton"></div>
         </oobe-text-button>

chrome/browser/resources/chromeos/login/oobe_buttons.html

@@ -59,7 +59,7 @@
     <link rel="stylesheet" href="oobe_text_buttons.css">
     <cr-button id="textButton" on-tap="onClick_" disabled="[[disabled]]"
         inverse$="[[inverse]]" aria-label$="[[labelForAria]]"
-        border$="[[border]]" android$="[[android]]">
+        border$="[[border]]">
       <div id="container"
           class="flex layout horizontal center center-justified self-stretch">
         <slot></slot>

chrome/browser/resources/chromeos/login/oobe_buttons.js

@@ -15,8 +15,6 @@ Polymer({
 
     border: Boolean,
 
-    android: {type: Boolean, value: false},
-
     /* Note that we are not using "aria-label" property here, because
      * we want to pass the label value but not actually declare it as an
      * ARIA property anywhere but the actual target element.

chrome/browser/resources/chromeos/login/oobe_dialog.css

@@ -77,18 +77,6 @@
   padding: unset;
 }
 
-#oobe-bottom[android] {
-  box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.14);
-}
-
-#oobe-bottom[android][hideShadow] {
-  box-shadow: unset;
-}
-
-#oobe-bottom[android] {
-  height: 60px;
-}
-
 #oobe-bottom ::slotted(*) {
   width: 100%;
 }

chrome/browser/resources/chromeos/login/oobe_dialog.html

@@ -58,7 +58,7 @@
     <link rel="stylesheet" href="oobe_dialog.css">
     <link rel="stylesheet" href="oobe_flex_layout.css">
     <style include="cr-shared-style"></style>
-    <div id="header-container" hidden="[[noHeader]]" android$="[[android]]">
+    <div id="header-container" hidden="[[noHeader]]">
       <div id="oobe-icon-div">
         <slot name="oobe-icon"></slot>
       </div>
@@ -77,7 +77,7 @@
       <slot name="footer"></slot>
     </div>
     <template is="dom-if" if="[[hasButtons]]">
-      <div id="oobe-bottom" hideShadow$="[[hideShadow]]" android$="[[android]]"
+      <div id="oobe-bottom" hideShadow$="[[hideShadow]]"
         no-buttons-padding$="[[noButtonsPadding]]"
           class="layout horizontal center">
         <slot name="bottom-buttons"></slot>

chrome/browser/resources/chromeos/login/oobe_dialog.js

@@ -55,11 +55,6 @@ Polymer({
       reflectToAttribute: true,
       observer: 'onfullScreenDialogChanged_',
     },
-
-    android: {
-      type: Boolean,
-      value: false,
-    },
   },
 
   focus: function() {

chrome/browser/resources/chromeos/login/oobe_dialog_host.css

@@ -22,8 +22,3 @@
   border-radius: 4px;
   box-shadow: 0 24px 24px rgba(0, 0, 0, .24), 0 0 24px rgba(0, 0, 0, .12);
 }
-
-:host([android]) {
-  min-height: 480px;
-  min-width: 576px;
-}