Move settings-section animations into setting-section, make better

chrome/browser/resources/settings/settings_main/settings_main.html

Index: chrome/browser/resources/settings/settings_main/settings_main.html
diff --git a/chrome/browser/resources/settings/settings_main/settings_main.html b/chrome/browser/resources/settings/settings_main/settings_main.html
index dfeb94f5a941282eff64d48c58730a8d1e484617..d22ef1ccb0cfcdda9015828e33d5818d0e0696e4 100644
--- a/chrome/browser/resources/settings/settings_main/settings_main.html
+++ b/chrome/browser/resources/settings/settings_main/settings_main.html
@@ -37,7 +37,9 @@
     </style>
     <content select="paper-icon-button"></content>
     <template is="dom-if" if="[[showBasicPage_]]">
-      <settings-basic-page prefs="{{prefs}}" current-route="{{currentRoute}}">
+      <settings-basic-page prefs="{{prefs}}" current-route="{{currentRoute}}"
+          on-subpage-expand="subpageExpanded_"

[michaelpg, 2016/06/28 23:45:16]

dschuyler, please take a look at these changes. We can't have the advanced page
and the toggle button disappear when a section is clicked, because that (a)
looks weird and (b) shortens the page which can change the scroll height.

+          on-subpage-collapsing="subpageCollapsing_">
       </settings-basic-page>
     </template>
     <template is="dom-if" if="[[showAdvancedToggle_]]">
@@ -51,7 +53,9 @@
     </template>
     <template is="dom-if" if="[[showAdvancedPage_]]">
       <settings-advanced-page prefs="{{prefs}}"
-          current-route="{{currentRoute}}">
+          current-route="{{currentRoute}}"
+          on-subpage-expand="subpageExpanded_"
+          on-subpage-collapsing="subpageCollapsing_">
       </settings-advanced-page>
     </template>
     <template is="dom-if" if="[[showAboutPage_]]">