MD Settings: Reset scroll when sliding subpages

chrome/browser/resources/settings/settings_page/main_page_behavior.js

Index: chrome/browser/resources/settings/settings_page/main_page_behavior.js
diff --git a/chrome/browser/resources/settings/settings_page/main_page_behavior.js b/chrome/browser/resources/settings/settings_page/main_page_behavior.js
index dec5c65ba499d3cde96c9ebae44f619332b3f470..2e556e3a46f6075459ec02a691aa1a450ca472de 100644
--- a/chrome/browser/resources/settings/settings_page/main_page_behavior.js
+++ b/chrome/browser/resources/settings/settings_page/main_page_behavior.js
@@ -96,6 +96,9 @@ var MainPageBehaviorImpl = {
         // Scroll to the collapsed section.
         if (currentSection && !settings.lastRouteChangeWasPopstate())
           currentSection.scrollIntoView();
+      } else {
+        // Scroll to top while sliding to another subpage.
+        this.scroller.scrollTop = 0;
       }
     } else if (currentSection) {
       // Expand the section into a subpage or scroll to it on the main page.