Added a UI for the Interests Prototype.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.ntp;
 
 import android.app.Activity;
 import android.app.Dialog;
 import android.content.Context;
 import android.graphics.Bitmap;
@@ skipping 18 matching lines @@
 import org.chromium.chrome.browser.compositor.layouts.content.InvalidationAwareThumbnailProvider;
 import org.chromium.chrome.browser.document.DocumentMetricIds;
 import org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkUtils;
 import org.chromium.chrome.browser.favicon.FaviconHelper;
 import org.chromium.chrome.browser.favicon.FaviconHelper.FaviconImageCallback;
 import org.chromium.chrome.browser.favicon.FaviconHelper.IconAvailabilityCallback;
 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.InterestsClickListener;
 import org.chromium.chrome.browser.ntp.LogoBridge.Logo;
 import org.chromium.chrome.browser.ntp.LogoBridge.LogoObserver;
 import org.chromium.chrome.browser.ntp.NewTabPageView.NewTabPageManager;
 import org.chromium.chrome.browser.preferences.DocumentModeManager;
 import org.chromium.chrome.browser.preferences.DocumentModePreference;
 import org.chromium.chrome.browser.preferences.PrefServiceBridge;
 import org.chromium.chrome.browser.preferences.PreferencesLauncher;
 import org.chromium.chrome.browser.profiles.MostVisitedSites;
 import org.chromium.chrome.browser.profiles.MostVisitedSites.MostVisitedURLsObserver;
 import org.chromium.chrome.browser.profiles.MostVisitedSites.ThumbnailCallback;
@@ skipping 113 matching lines @@
             NativePage page = BookmarksPage.buildPageInDocumentMode(
                     activity, tab, tabModelSelector, Profile.getLastUsedProfile(),
                     listener);
             page.updateForUrl(UrlConstants.BOOKMARKS_URL);
             Dialog dialog = new NativePageDialog(activity, page);
             listener.setDialog(dialog);
             dialog.show();
         }
     }
 
+    public static void launchInterestsDialog(Activity activity, final Tab tab) {
+        InterestsPage page =
+                new InterestsPage(activity, tab, Profile.getLastUsedProfile(), activity);
+        final Dialog dialog = new NativePageDialog(activity, page);
+
+        InterestsClickListener listener = new InterestsClickListener() {
+            @Override
+            public void onInterestClicked(String name) {
+                tab.loadUrl(new LoadUrlParams(
+                        TemplateUrlService.getInstance().getUrlForSearchQuery(name)));
+
+                dialog.dismiss();

[newt (away), 2015/12/12 00:30:31]

style nit: there's a few too many newlines here IMO. Use newlines to separate
logical sections of code, but don't separate every single line.

[PEConn, 2015/12/14 17:05:16]

Done.

+            }
+        };
+
+        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);
         page.updateForUrl(UrlConstants.RECENT_TABS_URL);
         Dialog dialog = new NativePageDialog(activity, page);
         manager.setDialog(dialog);
         dialog.show();
     }
 
     @VisibleForTesting
@@ skipping 126 matching lines @@
             if (mIsDestroyed) return;
             RecordUserAction.record("MobileNTPSwitchToOpenTabs");
             if (FeatureUtilities.isDocumentMode(mActivity)) {
                 launchRecentTabsDialog(mActivity, mTab);
             } else {
                 mTab.loadUrl(new LoadUrlParams(UrlConstants.RECENT_TABS_URL));
             }
         }
 
         @Override
+        public void navigateToInterests() {
+            if (mIsDestroyed) return;
+            RecordUserAction.record("MobileNTP.Interests.OpenDialog");
+            launchInterestsDialog(mActivity, mTab);

[newt (away), 2015/12/12 00:30:31]

what happens on tablets? A fullscreen dialog?

[PEConn, 2015/12/14 17:05:15]

Yes, for the moment. As you suggested in InterestsPage.java, this will
eventually bring up a native page, but for now it is a full page dialog.

+        }
+
+        @Override
         public void focusSearchBox(boolean beginVoiceSearch, String pastedText) {
             if (mIsDestroyed) return;
             if (mFakeboxDelegate != null) {
                 if (beginVoiceSearch) {
                     mFakeboxDelegate.startVoiceRecognition();
                 } else {
                     mFakeboxDelegate.requestUrlFocusFromFakebox(pastedText);
                 }
             }
         }
@@ skipping 324 matching lines @@
         @Override
         public void onBookmarkSelected(String url, String title, Bitmap favicon) {
             if (mDialog != null) mDialog.dismiss();
             mTab.loadUrl(new LoadUrlParams(url));
         }
 
         public void setDialog(Dialog dialog) {
             mDialog = dialog;
         }
     }
+

[newt (away), 2015/12/12 00:30:31]

remove this

[PEConn, 2015/12/14 17:05:16]

Done.

 }