Remove deleted offline page suggestions from opened NTPs

chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java
index 5a7025223869d11086b429518b787ccf706160a4..4a3c8d325788fba15f8a9238e3a68b3ca10adddd 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/NewTabPageAdapter.java
@@ -204,6 +204,16 @@ public class NewTabPageAdapter extends Adapter<NewTabPageViewHolder>
     }
 
     @Override
+    public void onSuggestionInvalidated(@CategoryInt int category, String suggestionId) {
+        // If there is no section for this category there is nothing to do.
+        if (!mSections.containsKey(category)) return;
+
+        SuggestionsSection section = mSections.get(category);

[Michael van Ouwerkerk, 2016/08/15 11:06:09]

nit: it would be less verbose, and I think still clear, to merge this line with
the next without using a local variable:
mSections.get(category).removeSuggestionById(suggestionId);

[Philipp Keck, 2016/08/16 10:54:40]

Done.

+        section.removeSuggestionById(suggestionId);
+        updateGroups();
+    }
+
+    @Override
     @NewTabPageListItem.ViewType
     public int getItemViewType(int position) {
         return getItems().get(position).getType();