Added a UI for the Interests Prototype.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
index 2122168a29a5658c8104903d9f28c47e428f828b..acb4c8131d57de96f2f9e533125a075f57de0be2 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPage.java
@@ -36,6 +36,7 @@ import org.chromium.chrome.browser.favicon.LargeIconBridge;
 import org.chromium.chrome.browser.favicon.LargeIconBridge.LargeIconCallback;
 import org.chromium.chrome.browser.metrics.StartupMetrics;
 import org.chromium.chrome.browser.ntp.BookmarksPage.BookmarkSelectedListener;
+import org.chromium.chrome.browser.ntp.InterestsPage.InterestsListener;
 import org.chromium.chrome.browser.ntp.LogoBridge.Logo;
 import org.chromium.chrome.browser.ntp.LogoBridge.LogoObserver;
 import org.chromium.chrome.browser.ntp.NewTabPageView.NewTabPageManager;
@@ -169,6 +170,17 @@ public class NewTabPage
         }
     }
 
+    public static void launchInterestsDialog(Activity activity, Tab tab) {
+        InterestsPage page =
+                new InterestsPage(activity, tab, Profile.getLastUsedProfile(), activity);
+        Dialog dialog = new NativePageDialog(activity, page);
+
+        InterestDialogSelectedListener listener = new InterestDialogSelectedListener(tab, dialog);
+        page.setListener(listener);
+
+        dialog.show();
+    }
+
     public static void launchRecentTabsDialog(Activity activity, Tab tab) {
         DocumentRecentTabsManager manager = new DocumentRecentTabsManager(tab, activity);
         NativePage page = new RecentTabsPage(activity, manager);
@@ -315,6 +327,13 @@ public class NewTabPage
         }
 
         @Override
+        public void navigateToInterests() {
+            if (mIsDestroyed) return;
+            RecordUserAction.record("MobileNTPSwitchToInterests");
+            launchInterestsDialog(mActivity, mTab);
+        }
+
+        @Override
         public void focusSearchBox(boolean beginVoiceSearch, String pastedText) {
             if (mIsDestroyed) return;
             if (mFakeboxDelegate != null) {
@@ -659,4 +678,23 @@ public class NewTabPage
             mDialog = dialog;
         }
     }
+
+    private static class InterestDialogSelectedListener implements InterestsListener {

[Bernhard Bauer, 2015/11/19 17:15:15]

You could probably even make this an anonymous inner class, so you don't need
the members and constructor.

[PEConn, 2015/11/20 11:23:41]

Done.

+
+        private Dialog mDialog;
+        private final Tab mTab;
+
+        public InterestDialogSelectedListener(Tab tab, Dialog dialog) {
+            mTab = tab;
+            mDialog = dialog;
+        }
+
+        @Override
+        public void onInterestClicked(String name) {
+            mTab.loadUrl(new LoadUrlParams(
+                    TemplateUrlService.getInstance().getUrlForSearchQuery(name)));
+
+            mDialog.dismiss();
+        }
+    }
 }