Update from https://crrev.com/316786

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 201 matching lines @@
 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
 
+BASE_EXPORT extern "C" NSString* const CBAdvertisementDataServiceDataKey;
+
+enum {
+  CBPeripheralStateDisconnected = 0,
+  CBPeripheralStateConnecting,
+  CBPeripheralStateConnected,
+};
+typedef NSInteger CBPeripheralState;
+
+@interface CBPeripheral : NSObject
+@property(readonly, nonatomic) CFUUIDRef UUID;
+@property(retain, readonly) NSString* name;
+@property(readonly) BOOL isConnected;
+@end
+
+enum {
+  CBCentralManagerStateUnknown = 0,
+  CBCentralManagerStateResetting,
+  CBCentralManagerStateUnsupported,
+  CBCentralManagerStateUnauthorized,
+  CBCentralManagerStatePoweredOff,
+  CBCentralManagerStatePoweredOn,
+};
+typedef NSInteger CBCentralManagerState;
+
+@protocol CBCentralManagerDelegate;
+
+@interface CBCentralManager : NSObject
+@property(readonly) CBCentralManagerState state;
+- (id)initWithDelegate:(id<CBCentralManagerDelegate>)delegate
+                 queue:(dispatch_queue_t)queue;
+- (void)scanForPeripheralsWithServices:(NSArray*)serviceUUIDs
+                               options:(NSDictionary*)options;
+- (void)stopScan;
+@end
+
+@protocol CBCentralManagerDelegate<NSObject>
+- (void)centralManagerDidUpdateState:(CBCentralManager*)central;
+- (void)centralManager:(CBCentralManager*)central
+    didDiscoverPeripheral:(CBPeripheral*)peripheral
+        advertisementData:(NSDictionary*)advertisementData
+                     RSSI:(NSNumber*)RSSI;
+@end
+
+@interface CBUUID : NSObject
+@property(nonatomic, readonly) NSData* data;
++ (CBUUID*)UUIDWithString:(NSString*)theString;
+@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
 
 enum {
   NSEventPhaseMayBegin    = 0x1 << 5
 };
 
 @interface NSColor (MountainLionSDK)
 - (CGColorRef)CGColor;
 @end
 
+@interface NSUUID : NSObject
+- (NSString*)UUIDString;
+@end
+
 #endif  // MAC_OS_X_VERSION_10_8
 
 
 #if !defined(MAC_OS_X_VERSION_10_9) || \
     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_9
 
 // NSProgress is public API in 10.9, but a version of it exists and is usable
 // in 10.8.
 
 @interface NSProgress : NSObject
@@ skipping 52 matching lines @@
 @end
 
 
 BASE_EXPORT extern "C" NSString* const
     NSWindowDidChangeOcclusionStateNotification;
 
 enum {
   NSWorkspaceLaunchWithErrorPresentation = 0x00000040
 };
 
+@interface CBPeripheral (MavericksSDK)
+@property(readonly, nonatomic) NSUUID* identifier;
+@end
+
+BASE_EXPORT extern "C" NSString* const CBAdvertisementDataIsConnectable;
+
 #else  // !MAC_OS_X_VERSION_10_9
 
 typedef enum {
    kCWSecurityModeOpen = 0,
    kCWSecurityModeWEP,
    kCWSecurityModeWPA_PSK,
    kCWSecurityModeWPA2_PSK,
    kCWSecurityModeWPA_Enterprise,
    kCWSecurityModeWPA2_Enterprise,
    kCWSecurityModeWPS,
@@ skipping 21 matching lines @@
 - (instancetype)initWithActivityType:(NSString*)activityType;
 - (void)becomeCurrent;
 - (void)invalidate;
 
 @end
 
 BASE_EXPORT extern "C" NSString* const NSUserActivityTypeBrowsingWeb;
 
 BASE_EXPORT extern "C" NSString* const NSAppearanceNameVibrantDark;
 
+@interface CBUUID (YosemiteSDK)
+- (NSString*)UUIDString;
+@end
+
 #endif  // MAC_OS_X_VERSION_10_10
 
 #endif  // BASE_MAC_SDK_FORWARD_DECLARATIONS_H_