[NTP Snippets] Show a status card when there are no available snippets

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 707514e1c0ff2dd9f2d33fc50b0a2a7bc79db289..a43fae171c508e8c986110431a40fb5d134ad923 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
@@ -44,12 +44,12 @@
 import org.chromium.chrome.browser.ntp.LogoBridge.LogoObserver;
 import org.chromium.chrome.browser.ntp.MostVisitedItem.MostVisitedItemManager;
 import org.chromium.chrome.browser.ntp.NewTabPage.OnSearchBoxScrollListener;
+import org.chromium.chrome.browser.ntp.cards.CardItemDecoration;
 import org.chromium.chrome.browser.ntp.cards.CardsLayoutOperations;
 import org.chromium.chrome.browser.ntp.cards.NewTabPageAdapter;
 import org.chromium.chrome.browser.ntp.cards.NewTabPageListItem;
 import org.chromium.chrome.browser.ntp.cards.NewTabPageRecyclerView;
 import org.chromium.chrome.browser.ntp.snippets.SnippetArticle;
-import org.chromium.chrome.browser.ntp.snippets.SnippetItemDecoration;
 import org.chromium.chrome.browser.ntp.snippets.SnippetsBridge.SnippetsObserver;
 import org.chromium.chrome.browser.profiles.MostVisitedSites.MostVisitedURLsObserver;
 import org.chromium.chrome.browser.profiles.MostVisitedSites.ThumbnailCallback;
@@ -241,6 +241,11 @@ void ensureIconIsAvailable(String pageUrl, String iconUrl, boolean isLargeIcon,
          * @param callback Callback to run after fetching completes (successful or not).
          */
         void fetchSnippetImage(SnippetArticle snippet, Callback<Bitmap> callback);
+
+        /**
+         * Requests new snippets.
+         */
+        void fetchSnippets();
     }
 
     /**
@@ -290,6 +295,7 @@ public void initialize(NewTabPageManager manager,
                     (NewTabPageLayout) LayoutInflater.from(getContext())
                             .inflate(R.layout.new_tab_page_layout, mRecyclerView, false);
             mNewTabPageLayout.setUseCardsUiEnabled(mUseCardsUi);
+            mRecyclerView.setAboveTheFoldView(mNewTabPageLayout);
 
             // Tailor the LayoutParams for the snippets UI, as the configuration in the XML is
             // made for the ScrollView UI.
@@ -415,7 +421,7 @@ public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                 }
             });
             initializeSearchBoxRecyclerViewScrollHandling();
-            mRecyclerView.addItemDecoration(new SnippetItemDecoration());
+            mRecyclerView.addItemDecoration(new CardItemDecoration(getContext()));
             CardsLayoutOperations.updateSnippetsHeaderDisplay(mRecyclerView,
                     mNewTabPageLayout.getPaddingTop());
         } else {
@@ -495,8 +501,7 @@ public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                     mRecyclerView.postDelayed(mSnapScrollRunnable, SNAP_SCROLL_DELAY_MS);
                 }
                 updateSearchBoxOnScroll();
-                CardsLayoutOperations
-                        .updatePeekingCard(mRecyclerView, mNewTabPageLayout, getHeight());
+                CardsLayoutOperations.updatePeekingCard(mRecyclerView, getHeight());
                 CardsLayoutOperations.updateSnippetsHeaderDisplay(mRecyclerView,
                         mNewTabPageLayout.getPaddingTop());
             }
@@ -836,7 +841,7 @@ public void onLayoutChange(View v, int left, int top, int right, int bottom,
         updateSearchBoxOnScroll();
 
         if (mUseCardsUi) {
-            CardsLayoutOperations.updatePeekingCard(mRecyclerView, mNewTabPageLayout, getHeight());
+            CardsLayoutOperations.updatePeekingCard(mRecyclerView, getHeight());
         }
     }
 
@@ -1100,7 +1105,7 @@ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 
         if (mUseCardsUi) {
-            CardsLayoutOperations.updatePeekingCard(mRecyclerView, mNewTabPageLayout, getHeight());
+            CardsLayoutOperations.updatePeekingCard(mRecyclerView, getHeight());
         }
     }