Correct iOS build for latest Xcode beta.

ios/web/crw_browsing_data_store.mm

 // 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.
 
 #import "ios/web/public/crw_browsing_data_store.h"
 
 #import <Foundation/Foundation.h>
 
 #include "base/ios/ios_util.h"
 #import "base/ios/weak_nsobject.h"
@@ skipping 27 matching lines @@
 
 @interface CRWBrowsingDataStore ()
 // Returns a serial queue on which stash and restore operations can be scheduled
 // to be run. All stash/restore operations need to be run on the same queue
 // hence it is shared with all CRWBrowsingDataStores.
 + (NSOperationQueue*)operationQueueForStashAndRestoreOperations;
 // Returns a concurrent queue on which remove operations can be scheduled to be
 // run. All remove operations need to be run on the same queue hence it is
 // shared with all CRWBrowsingDataStores.
 + (NSOperationQueue*)operationQueueForRemoveOperations;
+- (instancetype)init UNAVAILABLE_ATTRIBUTE;

[droger, 2015/06/10 15:59:10]

NS_UNAVAILABLE

[justincohen, 2015/06/10 16:02:25]

Done.

 
 // The array of all browsing data managers. Must be accessed from the main
 // thread.
 @property(nonatomic, readonly) NSArray* allBrowsingDataManagers;
 // Returns an array of browsing data managers for the given |browsingDataTypes|.
 - (NSArray*)browsingDataManagersForBrowsingDataTypes:
         (web::BrowsingDataTypes)browsingDataTypes;
 // Returns the selector that needs to be performed on the
 // CRWBrowsingDataManagers for the |operationType|. |operationType| cannot be
 // |NONE|.
@@ skipping 57 matching lines @@
   // delete operation.
   base::scoped_nsobject<NSOperation> _lastDispatchedOperation;
   // The last dispatched stash or restore operation that was enqueued to be run.
   base::scoped_nsobject<NSOperation> _lastDispatchedStashOrRestoreOperation;
   // The number of stash or restore operations that are still pending. If this
   // value > 0 the mode of the CRWBrowsingDataStore is |CHANGING|. The mode
   // can be made ACTIVE or INACTIVE only be set when this value is 0.
   NSUInteger _numberOfPendingStashOrRestoreOperations;
 }
 
+- (instancetype)init {
+  NOTREACHED();
+  return nil;
+}
+
 + (NSOperationQueue*)operationQueueForStashAndRestoreOperations {
   static dispatch_once_t onceToken = 0;
   static NSOperationQueue* operationQueueForStashAndRestoreOperations = nil;
   dispatch_once(&onceToken, ^{
     operationQueueForStashAndRestoreOperations =
         [[NSOperationQueue alloc] init];
     [operationQueueForStashAndRestoreOperations
         setMaxConcurrentOperationCount:1U];
     if (base::ios::IsRunningOnIOS8OrLater()) {
       [operationQueueForStashAndRestoreOperations
@@ skipping 329 matching lines @@
   DCHECK(queue);
 
   if (_lastDispatchedOperation) {
     [operation addDependency:_lastDispatchedOperation];
   }
   _lastDispatchedOperation.reset([operation retain]);
   [queue addOperation:operation];
 }
 
 @end