mac: Add metrics to record Bluetooth availability and capabilities.

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 142 matching lines @@
 
 @interface CWNetwork (LionSDK)
 @property(readonly) CWChannel* wlanChannel;
 @end
 
 @interface IOBluetoothHostController (LionSDK)
 - (NSString*)nameAsString;
 - (BluetoothHCIPowerState)powerState;
 @end
 
+enum {
+  kBluetoothFeatureLESupportedController = (1 << 6L),
+};
+
 @protocol IOBluetoothDeviceInquiryDelegate
 - (void)deviceInquiryStarted:(IOBluetoothDeviceInquiry*)sender;
 - (void)deviceInquiryDeviceFound:(IOBluetoothDeviceInquiry*)sender
                           device:(IOBluetoothDevice*)device;
 - (void)deviceInquiryComplete:(IOBluetoothDeviceInquiry*)sender
                         error:(IOReturn)error
                       aborted:(BOOL)aborted;
 @end
 
 @interface IOBluetoothL2CAPChannel (LionSDK)
@@ skipping 86 matching lines @@
 
 @interface NSWindow (YosemiteSDK)
 
 @property NSWindowTitleVisibility titleVisibility;
 
 @end
 
 #endif  // MAC_OS_X_VERSION_10_10
 
 #endif  // BASE_MAC_SDK_FORWARD_DECLARATIONS_H_