Add ObjC API for getting native histograms.

webrtc/sdk/objc/Framework/Classes/RTCMetricsSampleInfo+Private.h

Index: webrtc/sdk/objc/Framework/Classes/RTCMetricsSampleInfo+Private.h
diff --git a/webrtc/build/ios/SDK/PodTest/PodTest/AppDelegate.m b/webrtc/sdk/objc/Framework/Classes/RTCMetricsSampleInfo+Private.h
similarity index 54%
copy from webrtc/build/ios/SDK/PodTest/PodTest/AppDelegate.m
copy to webrtc/sdk/objc/Framework/Classes/RTCMetricsSampleInfo+Private.h
index 9eaa1682673f01696b2bf02a555873393c21c9e8..00d3fa6930f94954207fdcde43b62bbd75a03e97 100644
--- a/webrtc/build/ios/SDK/PodTest/PodTest/AppDelegate.m
+++ b/webrtc/sdk/objc/Framework/Classes/RTCMetricsSampleInfo+Private.h
@@ -8,19 +8,18 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import "AppDelegate.h"
-#import <WebRTC/WebRTC.h>
+#import "WebRTC/RTCMetricsSampleInfo.h"
 
-@implementation AppDelegate
+#include "webrtc/system_wrappers/include/metrics_default.h"
 
-- (BOOL)application:(UIApplication *)application
-    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  RTCInitializeSSL();
-  return YES;
-}
+NS_ASSUME_NONNULL_BEGIN
 
-- (void)applicationWillTerminate:(UIApplication *)application {
-  RTCCleanupSSL();
-}
+@interface RTCMetricsSampleInfo ()
+
+/** Initialize an RTCMetricsSampleInfo object from native SampleInfo. */
+- (instancetype)initWithNativeSampleInfo:
+    (const webrtc::metrics::SampleInfo &)info;
 
 @end
+
+NS_ASSUME_NONNULL_END