Update from chromium https://crrev.com/302282

base/mac/sdk_forward_declarations.h

 // 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.
 
 // This file contains forward declarations for items in later SDKs than the
 // default one with which Chromium is built (currently 10.6).
 // If you call any function from this header, be sure to check at runtime for
 // respondsToSelector: before calling these functions (else your code will crash
 // on older OS X versions that chrome still supports).
 
@@ skipping 192 matching lines @@
 - (BluetoothConnectionHandle)connectionHandle;
 - (BluetoothHCIRSSIValue)rawRSSI;
 - (NSArray*)services;
 - (IOReturn)performSDPQuery:(id)target uuids:(NSArray*)uuids;
 @end
 
 BASE_EXPORT extern "C" NSString* const NSWindowWillEnterFullScreenNotification;
 BASE_EXPORT extern "C" NSString* const NSWindowWillExitFullScreenNotification;
 BASE_EXPORT extern "C" NSString* const NSWindowDidEnterFullScreenNotification;
 BASE_EXPORT extern "C" NSString* const NSWindowDidExitFullScreenNotification;
+BASE_EXPORT extern "C" NSString* const
+    NSWindowDidChangeBackingPropertiesNotification;
 
 @protocol NSWindowDelegateFullScreenAdditions
 - (void)windowDidFailToEnterFullScreen:(NSWindow*)window;
 - (void)windowDidFailToExitFullScreen:(NSWindow*)window;
 @end
 
 #endif  // MAC_OS_X_VERSION_10_7
 
 #if !defined(MAC_OS_X_VERSION_10_8) || \
     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_8
@@ skipping 63 matching lines @@
 
 enum {
   NSWindowOcclusionStateVisible = 1UL << 1,
 };
 typedef NSUInteger NSWindowOcclusionState;
 
 @interface NSWindow (MavericksSDK)
 - (NSWindowOcclusionState)occlusionState;
 @end
 
+
+BASE_EXPORT extern "C" NSString* const
+    NSWindowDidChangeOcclusionStateNotification;
+
 enum {
   NSWorkspaceLaunchWithErrorPresentation = 0x00000040
 };
 
 #else  // !MAC_OS_X_VERSION_10_9
 
 typedef enum {
    kCWSecurityModeOpen = 0,
    kCWSecurityModeWEP,
    kCWSecurityModeWPA_PSK,
@@ skipping 12 matching lines @@
 BASE_EXPORT extern "C" NSString* const kCWSSIDDidChangeNotification;
 
 #endif  // MAC_OS_X_VERSION_10_9
 
 #if !defined(MAC_OS_X_VERSION_10_10) || \
     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_10
 
 @interface NSUserActivity : NSObject
 
 @property (readonly, copy) NSString* activityType;
+@property (copy) NSDictionary* userInfo;
 @property (copy) NSURL* webPageURL;
 
 @end
 
 BASE_EXPORT extern "C" NSString* const NSUserActivityTypeBrowsingWeb;
 
 BASE_EXPORT extern "C" NSString* const NSAppearanceNameVibrantDark;
 
 #endif  // MAC_OS_X_VERSION_10_10
 
 #endif  // BASE_MAC_SDK_FORWARD_DECLARATIONS_H_