Add ScopedObjCClassSwizzler in base/mac, absorbs objc_method_swizzle and ScopedClassSwizzler

chrome/common/mac/objc_zombie.mm

 // Copyright (c) 2012 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 "chrome/common/mac/objc_zombie.h"
 
 #include <AvailabilityMacros.h>
 
 #include <execinfo.h>
 #import <objc/runtime.h>
 
 #include <algorithm>
 
 #include "base/debug/crash_logging.h"
 #include "base/debug/stack_trace.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/lock.h"
 #include "chrome/common/crash_keys.h"
-#import "chrome/common/mac/objc_method_swizzle.h"
 
 #if !defined(OS_IOS) && (MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_6)
 // Apparently objc/runtime.h doesn't define this with the 10.6 SDK yet.
 // The docs say it exists since 10.6 however.
 OBJC_EXPORT void *objc_destructInstance(id obj);
 #endif
 
 // Deallocated objects are re-classed as |CrZombie|.  No superclass
 // because then the class would have to override many/most of the
 // inherited methods (|NSObject| is like a category magnet!).
@@ skipping 390 matching lines @@
   if (oldZombies) {
     for (size_t i = 0; i < oldCount; ++i) {
       if (oldZombies[i].object)
         object_dispose(oldZombies[i].object);
     }
     free(oldZombies);
   }
 }
 
 }  // namespace ObjcEvilDoers