Remove unused Interests code.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
index cb60db70713415b2311dda7a3a95b44de7c1db7c..09d43320601b74d45e45811ccac08ce51c0f440c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageView.java
@@ -128,9 +128,6 @@ public class NewTabPageView extends FrameLayout
         /** @return Whether voice search is enabled and the microphone should be shown. */
         boolean isVoiceSearchEnabled();
 
-        /** @return Whether the NTP Interests tab is enabled and its button should be shown. */
-        boolean isInterestsEnabled();
-
         /** @return Whether the toolbar at the bottom of the NTP is enabled and should be shown. */
         boolean isToolbarEnabled();
 
@@ -152,9 +149,6 @@ public class NewTabPageView extends FrameLayout
         /** Opens a url in the current tab. */
         void openUrl(String url);
 
-        /** Opens the interests dialog. */
-        void navigateToInterests();
-
         /**
          * Animates the search box up into the omnibox and bring up the keyboard.
          * @param beginVoiceSearch Whether to begin a voice search.
@@ -351,17 +345,6 @@ public class NewTabPageView extends FrameLayout
                     mManager.navigateToBookmarks();
                 }
             });
-            toolbar.getInterestsButton().setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    mManager.navigateToInterests();
-                }
-            });
-
-            // Set up interests
-            if (manager.isInterestsEnabled()) {
-                toolbar.getInterestsButton().setVisibility(View.VISIBLE);
-            }
         } else {
             ((ViewGroup) toolbar.getParent()).removeView(toolbar);
             MarginLayoutParams params = (MarginLayoutParams) getWrapperView().getLayoutParams();