[MD settings] change ClearBrowsingData from a sub-page to a dialog

chrome/browser/resources/settings/clear_browsing_data_page/clear_browsing_data_page.js

Index: chrome/browser/resources/settings/clear_browsing_data_page/clear_browsing_data_page.js
diff --git a/chrome/browser/resources/settings/clear_browsing_data_page/clear_browsing_data_page.js b/chrome/browser/resources/settings/clear_browsing_data_page/clear_browsing_data_page.js
index 5a9b14c2c61c0bdc9027ebcaaa5f5d433c7240e6..9c971a01f0af24469e2107384f2826aeb3942ab0 100644
--- a/chrome/browser/resources/settings/clear_browsing_data_page/clear_browsing_data_page.js
+++ b/chrome/browser/resources/settings/clear_browsing_data_page/clear_browsing_data_page.js
@@ -16,7 +16,7 @@
  *    </iron-animated-pages>
  *
  * @group Chrome Settings Elements
- * @element settings-privacy-page
+ * @element settings-clear-browsing-data-page
  */
 Polymer({
   is: 'settings-clear-browsing-data-page',
@@ -75,8 +75,7 @@ Polymer({
 
   /** @private */
   doneClearing_: function() {
-    if (this.$)
-      this.$.clearDataButton.disabled = false;
+    // TODO(dschuyler): inform the user on whether clearing data was successful.
   },
 
   /**
@@ -95,9 +94,15 @@ Polymer({
     }
   },
 
+  /** Open the clear browsing data dialog. */
+  showClearBrowsingDataDialog: function() {
+    this.$.clearBrowsingDataDialog.open();
+  },
+
   /** @private */
-  onPerformClearBrowsingDataTap_: function() {
-    this.$.clearDataButton.disabled = true;
-    chrome.send('performClearBrowserData');
+  onDialogClosed_: function(event) {
+    if (event.detail.confirmed) {
+      chrome.send('performClearBrowserData');
+    }
   },
 });