Delete unused getContextMenuManager() methods.

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 e338b426665e8f50e21766f0167f64a064caf8e7..38f3faf0c185db71cd933e3f4dd10073fb217fdd 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
@@ -251,12 +251,6 @@ public class NewTabPage
             if (mFakeboxDelegate == null) return false;
             return mFakeboxDelegate.isCurrentPage(NewTabPage.this);
         }
-
-        @Override
-        public ContextMenuManager getContextMenuManager() {
-            assert !mIsDestroyed;
-            return mNewTabPageView.getContextMenuManager();
-        }
     }
 
     /**