Consolidate SDK forwards in sdk_forward_declarations.h.

device/bluetooth/bluetooth_profile_mac.mm

Index: device/bluetooth/bluetooth_profile_mac.mm
diff --git a/device/bluetooth/bluetooth_profile_mac.mm b/device/bluetooth/bluetooth_profile_mac.mm
index 5ac641438ab6c9b4d34f5b6852b74af3da7a8c4e..288239f1448e4252bac8bbb0613482f85ae4e660 100644
--- a/device/bluetooth/bluetooth_profile_mac.mm
+++ b/device/bluetooth/bluetooth_profile_mac.mm
@@ -11,6 +11,7 @@
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/mac/scoped_cftyperef.h"
+#include "base/mac/sdk_forward_declarations.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
@@ -18,16 +19,6 @@
 #include "device/bluetooth/bluetooth_device_mac.h"
 #include "device/bluetooth/bluetooth_socket_mac.h"
 
-// Replicate specific 10.7 SDK declarations for building with prior SDKs.
-#if !defined(MAC_OS_X_VERSION_10_7) || \
-    MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
-
-@interface IOBluetoothDevice (LionSDKDeclarations)
-- (IOReturn)performSDPQuery:(id)target uuids:(NSArray*)uuids;
-@end
-
-#endif  // MAC_OS_X_VERSION_10_7
-
 namespace device {
 namespace {