[Contextual Search] Remove opt-in code.

chrome/browser/resources/contextual_search/promo.css

-/* Copyright 2014 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. */
-
-/* TODO: Need to clean up @font-face after we remove font-family from body. */
-@font-face {
-  font-family: 'Roboto2';
-  font-weight: 400;
-  src: local('Roboto'), local('Roboto2-Regular'),
-      url(chrome://resources/roboto/roboto.woff2) format('woff2'),
-      url(chrome://resources/roboto/roboto.woff) format('woff');
-}
-
-/* TODO(pedrosimonetti): Find a better way to fix the problem when the
- * text scaling preference is set to a high value.
- *
- * This CSS rule prevents the promo text from scaling as explained here:
- * https://code.google.com/p/chromium/issues/detail?id=252828#c10
- *
- * For for background about the problem, see:
- * https://code.google.com/p/chromium/issues/detail?id=466773
- */
-#heading,
-#description {
-  max-height: 999999px;
-}
-
-body {
-  font-family: 'Roboto2', sans-serif;
-  margin: 0;
-}
-
-a {
-  text-decoration: none;
-}
-
-a.colored-link {
-  color: rgb(66, 133, 244);
-}
-
-#container {
-  /* NOTE(pedrosimonetti): There's an implicit extra top margin that is
-   * rendered natively (currently using 24dp). So, the total padding will
-   * be 38dp (24dp + 14dp). For more info, see SEARCH_BAR_HEIGHT_STATE_PROMO
-   * in ContextualSearchPanelBase.java.
-   *
-   * We're also setting the side and bottom paddings to ensure to make sure
-   * that when computing the height of the container all margins/paddings will
-   * be considered.
-   */
-  padding: 14px 16px 12px;
-}
-
-#button-container {
-  margin-top: 24px;
-  text-align: end;
-  width: 100%;
-}
-
-#container.hide {
-  -webkit-transform: scale(0.95);
-  -webkit-transition-duration: 130ms;
-  -webkit-transition-property: opacity, -webkit-transform;
-  opacity: 0;
-}
-
-#description {
-  color: #7E7E7E;
-  font-size: 16px;
-  line-height: 1.38em;
-  margin: 12px 0 24px;
-}
-
-/* Some properties below can be overridden in landscape orientation. */
-#heading {
-  font-size: 23px;
-  margin: 20px 0 12px;
-  text-align: center;
-}
-.header-image {
-  background-image: url(header.svg);
-  background-repeat: no-repeat;
-  height: 98px;
-  margin: 0 auto 38px auto;
-  width: 156px;
-}
-.portrait {
-  display: block;
-}
-.landscape {
-  display: none;
-}
-
-/* Landscape */
-@media screen and (orientation:landscape) {
-  #heading {
-    margin-top: 0;
-    /* The heading text and description text should be aligned, therefore
-     * the left margin here will be equal to the header image width (156px)
-     * plus its right margin (24px). Therefore the total left should be
-     * 156px + 24px = 180px.
-     */
-    margin-left: 180px;
-    padding-top: 8px;
-    text-align: left;
-  }
-  .header-image {
-    /* The header image is supposed to be vertically centered when the promo
-     * is in landscape mode. For now, we're forcefully moving the image 4
-     * pixels up to make it centered. A better approach would be using CSS
-     * flexbox to properly center it, but this will require changing the
-     * markup and styling of the whole promo, and it could be tricky coming
-     * up with a single markup that works in both portrait and lanscape modes.
-     */
-    margin: 0 24px 0 0;
-    position: relative;
-    top: -4px;
-  }
-  .portrait {
-    display: none;
-  }
-  .landscape {
-    display: block;
-    float: left;
-  }
-  html[dir='rtl'] .landscape {
-    float: right;
-  }
-}
-
-button {
-  background: none;
-  border: none;
-  display: inline-block;
-  font-family: 'Roboto2', sans-serif;
-  font-size: 14px;
-  margin: 6px 0;
-  /* We use a slightly different top-bottom padding because Roboto has a
-   * rendering bug which makes an extra padding to be rendered at the bottom of
-   * text.
-   */
-  padding: 12px 16px 8px;
-  white-space: nowrap;
-}
-
-button .caption {
-  text-transform: uppercase;
-}
-
-#optin-button {
-  background: rgb(66, 133, 244);
-  background-clip: padding-box;
-  border-radius: 3px;
-}
-
-#optin-button .caption {
-  color: white;
-}
-
-#optout-button .caption {
-  color: rgb(66, 133, 244);
-}