MD Settings: make chrome://[md-]settings/clearBrowserData URL work

chrome/browser/resources/settings/privacy_page/privacy_page.js

Index: chrome/browser/resources/settings/privacy_page/privacy_page.js
diff --git a/chrome/browser/resources/settings/privacy_page/privacy_page.js b/chrome/browser/resources/settings/privacy_page/privacy_page.js
index 00b0dd17e1868f4b1d697082105af64e4ad9441d..96d3d8f4447d4bc7853775584fbbb20622ae1125 100644
--- a/chrome/browser/resources/settings/privacy_page/privacy_page.js
+++ b/chrome/browser/resources/settings/privacy_page/privacy_page.js
@@ -28,17 +28,41 @@ Polymer({
     },
 
     /** @private */
-    showClearBrowsingDataDialog_: Boolean,
+    showClearBrowsingDataDialog_: {
+      computed: 'computeShowClearBrowsingDataDialog_(currentRoute)',
+      type: Boolean,
+    },
   },
 
   ready: function() {
     this.ContentSettingsTypes = settings.ContentSettingsTypes;
   },
 
+  /** @suppress {missingProperties} */
+  attached: function() {
+    if (this.showClearBrowsingDataDialog_) {
+      settings.main.rendered.then(function() {
+        var dialog = this.$$('settings-clear-browsing-data-dialog').$.dialog;
+        // TODO(dbeam): cast to a CrDialogElement when it compiles.
+        dialog.refit();
+      }.bind(this));
+    }
+  },
+
+  /**
+   * @return {boolean} Whether the Clear Browsing Data dialog should be showing.
+   * @private
+   */
+  computeShowClearBrowsingDataDialog_: function() {
+    var route = this.currentRoute;
+    return route && route.subpage && route.subpage[0] == 'clear-browsing-data';
+  },
+
   /** @private */
   onManageCertificatesTap_: function() {
 <if expr="use_nss_certs">
-    this.$.pages.setSubpageChain(['manage-certificates']);
+    var pages = /** @type {!SettingsAnimatedPagesElement} */(this.$.pages);
+    pages.setSubpageChain(['manage-certificates']);
 </if>
 <if expr="is_win or is_macosx">
     settings.PrivacyPageBrowserProxyImpl.getInstance().
@@ -48,7 +72,8 @@ Polymer({
 
   /** @private */
   onSiteSettingsTap_: function() {
-    this.$.pages.setSubpageChain(['site-settings']);
+    var pages = /** @type {!SettingsAnimatedPagesElement} */(this.$.pages);
+    pages.setSubpageChain(['site-settings']);
   },
 
   /** @private */