Mark public ObjC APIs as explicitly visible.
BUG=
Review URL: https://codereview.webrtc.org/1899573002
Cr-Commit-Position: refs/heads/master@{#12431}
diff --git a/webrtc/base/objc/RTCFileLogger.h b/webrtc/base/objc/RTCFileLogger.h
index 281be4e..44ccb1c 100644
--- a/webrtc/base/objc/RTCFileLogger.h
+++ b/webrtc/base/objc/RTCFileLogger.h
@@ -10,6 +10,8 @@
#import <Foundation/Foundation.h>
+#import "webrtc/base/objc/RTCMacros.h"
+
typedef NS_ENUM(NSUInteger, RTCFileLoggerSeverity) {
RTCFileLoggerSeverityVerbose,
RTCFileLoggerSeverityInfo,
@@ -31,6 +33,7 @@
// are preserved while the middle section is overwritten instead.
// For kRTCFileLoggerTypeApp, the oldest log is overwritten.
// This class is not threadsafe.
+RTC_EXPORT
@interface RTCFileLogger : NSObject
// The severity level to capture. The default is kRTCFileLoggerSeverityInfo.