Support action button to fetch more content suggestions

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/ActionListItem.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/ActionListItem.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/ActionListItem.java
index 9d93dab4d19143fbeb01667f0140eea3f0bddec2..f144d83b1d5384c12de78dcf24d9d5b7b75a9794 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/ActionListItem.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/cards/ActionListItem.java
@@ -6,30 +6,58 @@ package org.chromium.chrome.browser.ntp.cards;
 
 import android.view.View;
 
+import org.chromium.base.Log;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ntp.NewTabPageView.NewTabPageManager;
 import org.chromium.chrome.browser.ntp.UiConfig;
+import org.chromium.chrome.browser.ntp.snippets.KnownCategories;
 
 /**
  * Item that allows the user to perform an action on the NTP.
  */
 class ActionListItem implements NewTabPageListItem {
+    private static final String TAG = "NtpCards";
+
+    private final int mCategory;
+
+    public ActionListItem(int category) {
+        mCategory = category;
+    }
+
     @Override
     public int getType() {
         return NewTabPageListItem.VIEW_TYPE_ACTION;
     }
 
     public static class ViewHolder extends CardViewHolder {
+        private ActionListItem mActionListItem;
+
         public ViewHolder(NewTabPageRecyclerView recyclerView, final NewTabPageManager manager,
                 UiConfig uiConfig) {
             super(R.layout.new_tab_page_action_card, recyclerView, uiConfig);
             itemView.setOnClickListener(new View.OnClickListener() {
                 @Override
                 public void onClick(View v) {
-                    // TODO(dgn): Implement other behaviours.
-                    manager.navigateToBookmarks();
+                    int category = mActionListItem.mCategory;
+                    if (category == KnownCategories.BOOKMARKS) {
+                        manager.navigateToBookmarks();
+                    } else if (category == KnownCategories.OFFLINE_PAGES) {
+                        // TODO(pke): Implement.
+                        // org.chromium.chrome.browser.download.DownloadUtils.showDownloadManager
+                    } else {
+                        // TODO(pke): This should redirect to the C++ backend. Once it does,
+                        // change the condition in the SuggestionsSection constructor.
+                        Log.wtf(TAG, "More action called on a dynamically added section: %d",
+                                category);
+                    }
                 }
             });
         }
+
+        @Override
+        public void onBindViewHolder(NewTabPageListItem item) {
+            super.onBindViewHolder(item);
+            mActionListItem = (ActionListItem) item;
+        }
     }
 }