mac: Remove IsOSLion().

media/base/mac/avfoundation_glue.mm

 // Copyright 2013 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.
 
 #import "media/base/mac/avfoundation_glue.h"
 
 #import <AVFoundation/AVFoundation.h>
 #include <dlfcn.h>
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/mac/mac_util.h"
 #include "base/macros.h"
 #include "base/metrics/histogram.h"
 #include "base/trace_event/trace_event.h"
 #include "media/base/media_switches.h"
 
-// Forward declarations of AVFoundation.h strings.
-// This is needed to avoid compile time warnings since currently
-// |mac_deployment_target| is 10.6.
-extern NSString* const AVCaptureDeviceWasConnectedNotification;
-extern NSString* const AVCaptureDeviceWasDisconnectedNotification;
-extern NSString* const AVMediaTypeVideo;
-extern NSString* const AVMediaTypeAudio;
-extern NSString* const AVMediaTypeMuxed;
-extern NSString* const AVCaptureSessionRuntimeErrorNotification;
-extern NSString* const AVCaptureSessionDidStopRunningNotification;
-extern NSString* const AVCaptureSessionErrorKey;
-extern NSString* const AVVideoScalingModeKey;
-extern NSString* const AVVideoScalingModeResizeAspectFill;
-
 namespace {
 // This class is used to retrieve AVFoundation NSBundle and library handle. It
 // must be used as a LazyInstance so that it is initialised once and in a
 // thread-safe way. Normally no work is done in constructors: LazyInstance is
 // an exception.
 class AVFoundationInternal {
  public:
   AVFoundationInternal() {
     bundle_ = [NSBundle
         bundleWithPath:@"/System/Library/Frameworks/AVFoundation.framework"];
@@ skipping 162 matching lines @@
 @implementation AVCaptureDeviceInputGlue
 
 + (CrAVCaptureDeviceInput*)deviceInputWithDevice:(CrAVCaptureDevice*)device
                                            error:(NSError**)outError {
   return [[AVFoundationGlue::AVFoundationBundle()
       classNamed:@"AVCaptureDeviceInput"] deviceInputWithDevice:device
                                                           error:outError];
 }
 
 @end  // @implementation AVCaptureDeviceInputGlue