Extract a DataSource interface for items shown in a status card.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/StatusItem.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/StatusItem.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/StatusItem.java
index df6fd9631313dd75e560b885d633c5cfc8428c06..9285ff97fbc3eef8551392785c31badf0959c34a 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/StatusItem.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/StatusItem.java
@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.ntp.cards;
 
 import android.content.Context;
+import android.support.annotation.StringRes;
 
 import org.chromium.chrome.R;
 
@@ -12,26 +13,40 @@ import org.chromium.chrome.R;
  * Card that is shown when the user needs to be made aware of some information about their
  * configuration that affects the NTP suggestions.
  */
-public class StatusItem implements NewTabPageItem {
-    private final int mHeaderStringId;
-    private final int mDescriptionStringId;
-    private final int mActionStringId;
-
-    protected StatusItem(int headerStringId, int descriptionStringId, int actionStringId) {
-        mHeaderStringId = headerStringId;
-        mDescriptionStringId = descriptionStringId;
-        mActionStringId = actionStringId;
-    }
-
+public abstract class StatusItem implements NewTabPageItem, StatusCardViewHolder.DataSource {
     public static StatusItem createNoSuggestionsItem(SuggestionsCategoryInfo categoryInfo) {
-        return new StatusItem(R.string.ntp_status_card_title_no_suggestions,
-                categoryInfo.getNoSuggestionDescription(), 0);
+        return new NoSuggestionsItem(categoryInfo);
     }
 
-    protected void performAction(Context context) {}
+    private static class NoSuggestionsItem extends StatusItem {
+        private final SuggestionsCategoryInfo mCategoryInfo;
+
+        public NoSuggestionsItem(SuggestionsCategoryInfo info) {
+            mCategoryInfo = info;
+        }
+
+        @Override
+        @StringRes
+        public int getHeader() {
+            return R.string.ntp_status_card_title_no_suggestions;
+        }
+
+        @Override
+        @StringRes
+        public int getDescription() {
+            return mCategoryInfo.getNoSuggestionDescription();
+        }
+
+        @Override
+        @StringRes
+        public int getActionLabel() {
+            return 0;
+        }
 
-    protected boolean hasAction() {
-        return mActionStringId != 0;
+        @Override
+        public void performAction(Context context) {
+            assert false;
+        }
     }
 
     @Override
@@ -44,16 +59,4 @@ public class StatusItem implements NewTabPageItem {
         assert holder instanceof StatusCardViewHolder;
         ((StatusCardViewHolder) holder).onBindViewHolder(this);
     }
-
-    public int getHeader() {
-        return mHeaderStringId;
-    }
-
-    public int getDescription() {
-        return mDescriptionStringId;
-    }
-
-    public int getActionLabel() {
-        return mActionStringId;
-    }
 }