Delete dead code for CurrentlyOpenTabs

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/RecentTabsManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/RecentTabsManager.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/RecentTabsManager.java
index aec39b8f0126197ad9cd8df2e047acf0191d4779..cc198aa1f1790ae9708524048efefd1553ca4a68 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/RecentTabsManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/RecentTabsManager.java
@@ -164,9 +164,6 @@ public class RecentTabsManager implements AndroidSyncSettingsObserver, SignInSta
         mSignInManager.addSignInStateObserver(this);
     }
 
-    protected void updateCurrentlyOpenTabs() {
-    }
-
     private void updateRecentlyClosedTabs() {
         mRecentlyClosedTabs = mRecentlyClosedBridge.getRecentlyClosedTabs(
                 RECENTLY_CLOSED_MAX_TAB_COUNT);
@@ -180,13 +177,6 @@ public class RecentTabsManager implements AndroidSyncSettingsObserver, SignInSta
     }
 
     /**
-     * @return Most up-to-date list of currently open tabs.
-     */
-    public List<CurrentlyOpenTab> getCurrentlyOpenTabs() {
-        return null;
-    }
-
-    /**
      * @return Most up-to-date list of foreign sessions.
      */
     public List<ForeignSession> getForeignSessions() {
@@ -271,49 +261,6 @@ public class RecentTabsManager implements AndroidSyncSettingsObserver, SignInSta
     }
 
     /**
-     * Sets the persistent expanded/collapsed state of the currently open tabs list.
-     *
-     * @param isCollapsed Whether the currently open tabs list is collapsed.
-     */
-    public void setCurrentlyOpenTabsCollapsed(boolean isCollapsed) {
-        if (mIsDestroyed) return;
-        mNewTabPagePrefs.setCurrentlyOpenTabsCollapsed(isCollapsed);
-    }
-
-    /**
-     * Determine the expanded/collapsed state of the currently open tabs list.
-     *
-     * @return Whether the currently open tabs list is collapsed.
-     */
-    public boolean isCurrentlyOpenTabsCollapsed() {
-        return mNewTabPagePrefs.getCurrentlyOpenTabsCollapsed();
-    }
-
-    /**
-     * Sets the state for showing all tabs in the currently open tabs list. This is intended to
-     * be overridden in extending classes and set to true when the user clicks the "More" button
-     * at the end of the list.
-     * @param showingAll Whether the currently open tabs list should start to show all.
-     */
-    public void setCurrentlyOpenTabsShowAll(boolean showingAll) {
-    }
-
-    /**
-     * @return Whether the currently open tabs group shows all tabs. If it is not, only a limited
-     * number of tabs is shown with a "More" button at the end of the list to show all.
-     */
-    public boolean isCurrentlyOpenTabsShowingAll() {
-        return false;
-    }
-
-    /**
-     * Closes the specified currently open tab.
-     * @param tab Information about the tab that should be closed.
-     */
-    public void closeTab(CurrentlyOpenTab tab) {
-    }
-
-    /**
      * Sets the persistent expanded/collapsed state of a foreign session list.
      *
      * @param session foreign session to collapsed.