Update from https://crrev.com/316786

base/mac/sdk_forward_declarations.h

Index: base/mac/sdk_forward_declarations.h
diff --git a/base/mac/sdk_forward_declarations.h b/base/mac/sdk_forward_declarations.h
index faa36eac512c34f71b7c47c8040f63c0fa39b8dd..2795b195f9e77af96c15e2668ac5950c9133a9e2 100644
--- a/base/mac/sdk_forward_declarations.h
+++ b/base/mac/sdk_forward_declarations.h
@@ -219,6 +219,55 @@ BASE_EXPORT extern "C" NSString* const
 - (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) || \
@@ -232,6 +281,10 @@ enum {
 - (CGColorRef)CGColor;
 @end
 
+@interface NSUUID : NSObject
+- (NSString*)UUIDString;
+@end
+
 #endif  // MAC_OS_X_VERSION_10_8
 
 
@@ -304,6 +357,12 @@ 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 {
@@ -345,6 +404,10 @@ 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_