Visual polishing of the MD Clear Browsing Data dialog.

ui/webui/resources/cr_elements/cr_dialog/cr_dialog.html

 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-dialog-behavior/paper-dialog-behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-dialog-behavior/paper-dialog-shared-styles.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 
 <dom-module id="cr-dialog">
   <template>
     <style include="paper-dialog-shared-styles">
       :host {
         border-radius: 2px;
       }
 
       :host ::content > * {
         /* Overrides paper-dialog-shared-styles. */
         -webkit-padding-end: 0;
         -webkit-padding-start: 0;
         margin-bottom: 0;
         margin-top: 0;
       }
 
       .title-container {
         align-items: center;
         /* TODO(dbeam): should this be a --settings-separator-line? */

[Dan Beam, 2016/06/28 20:40:25]

this TODO was written when this code lived in:
chrome/browser/resources/settings/settings_dialog.html

before it was moved here.

[msramek, 2016/06/29 11:32:22]

Acknowledged.

-        border-bottom: 1px solid rgba(0, 0, 0, 0.14);
+        border-bottom: var(--settings-dialog-title-border);

[Dan Beam, 2016/06/28 20:39:44]

this should not reference settings

[msramek, 2016/06/29 11:32:22]

Makes sense. I'll just use the exact color for now. Unless it's preferred to
define a global constant for cr_elements, but that seems to also affect
history/, so perhaps not in this CL.

         display: flex;
         min-height: 52px;
       }
 
       :host ::content .title {
         font-size: 114.28%; /* (16px / 14px) * 100 */
       }
 
       #close {
         --paper-icon-button: {
@@ skipping 60 matching lines @@
       </paper-icon-button>
     </div>
     <div class="body-container">
       <content select=".body"></content>
     </div>
     <content select=".button-container"></content>
     <content select=".footer"></content>
   </template>
   <script src="cr_dialog.js"></script>
 </dom-module>