Reland: Ntp: restore scroll position.

chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
index fddc26ea35d472a32a9440fef3e929389722851d..68daf6f136821ff21c9b9d5416a7e2f4bb895987 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
@@ -296,7 +296,7 @@ public class NewTabPageView extends FrameLayout
      * @param snippetsBridge The optional bridge, that can be used to interact with the snippets.
      */
     public void initialize(NewTabPageManager manager, boolean searchProviderHasLogo,
-            SnippetsBridge snippetsBridge) {
+            SnippetsBridge snippetsBridge, int scrollPosition) {
         mManager = manager;
         mUiConfig = new UiConfig(this);
         ViewStub stub = (ViewStub) findViewById(R.id.new_tab_page_layout_stub);
@@ -352,6 +352,7 @@ public class NewTabPageView extends FrameLayout
             mNewTabPageAdapter =
                     new NewTabPageAdapter(mManager, mNewTabPageLayout, snippetsBridge, mUiConfig);
             mRecyclerView.setAdapter(mNewTabPageAdapter);
+            mRecyclerView.scrollToPosition(scrollPosition);
 
             // Set up swipe-to-dismiss
             ItemTouchHelper helper =
@@ -1178,4 +1179,11 @@ public class NewTabPageView extends FrameLayout
             return mScrollView.getScrollY();
         }
     }
+
+    /**
+     * @return The adapter position the user has scrolled to.
+     */
+    public int getScrollPosition() {
+        return mRecyclerView.getScrollPosition();
+    }
 }