Cleanup handoff_manager.h header.

components/handoff/handoff_manager.mm

 // Copyright 2014 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.
 
 #include "components/handoff/handoff_manager.h"
 
 #include "base/logging.h"
+#include "base/mac/objc_property_releaser.h"
 #include "base/mac/scoped_nsobject.h"
 #include "net/base/mac/url_conversions.h"
 
 #if defined(OS_IOS)
 #include "base/ios/ios_util.h"
 #include "components/handoff/pref_names_ios.h"
 #include "components/pref_registry/pref_registry_syncable.h"  // nogncheck
 #endif
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
 #include "base/mac/mac_util.h"
 #include "base/mac/sdk_forward_declarations.h"
 #endif
 
 @interface HandoffManager ()
 
 // The active user activity.
 @property(nonatomic, retain) NSUserActivity* userActivity;
 
 // Whether the URL of the current tab should be exposed for Handoff.
 - (BOOL)shouldUseActiveURL;
 
 // Updates the active NSUserActivity.
 - (void)updateUserActivity;
 
 @end
 
-@implementation HandoffManager
+@implementation HandoffManager {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_HandoffManager;
+  GURL _activeURL;
+  NSUserActivity* _userActivity;
+  handoff::Origin _origin;
+}
 
 @synthesize userActivity = _userActivity;
 
 #if defined(OS_IOS)
 + (void)registerBrowserStatePrefs:(user_prefs::PrefRegistrySyncable*)registry {
   registry->RegisterBooleanPref(
       prefs::kIosHandoffToOtherDevices, true,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 }
 #endif
@@ skipping 57 matching lines @@
 
 @end
 
 @implementation HandoffManager (TestingOnly)
 
 - (NSURL*)userActivityWebpageURL {
   return self.userActivity.webpageURL;
 }
 
 @end