question: public int loadState ( ) { try { waitForMigrationToFinish ( ) ; } catch ( InterruptedException e ) { } catch ( ExecutionException e ) { } mCancelNormalTabLoads = false ; mCancelIncognitoTabLoads = false ; mNormalTabsRestored = new SparseIntArray ( ) ; mIncognitoTabsRestored = new SparseIntArray ( ) ; int nextId = 0 ; try { nextId = loadStateInternal ( ) ; } catch ( Exception e ) { Log . d ( TAG , "loadState exception: " + e . toString ( ) , e ) ; } cleanupPersistentDataAtAndAboveId ( nextId ) ; if ( mObserver != null ) mObserver . onInitialized ( mTabsToRestore . size ( ) ) ; return nextId ; }
target:  Restore saved state. Must be called before any tabs are added to the list.