GN: Add targets for AppRTCDemo on Mac+iOS

BUG=webrtc:6022
NOTRY=True

Review-Url: https://codereview.webrtc.org/2211413003
Cr-Commit-Position: refs/heads/master@{#13666}

webrtc/examples/objc/AppRTCDemo/ios/ARDMainView.m

@@ -19,7 +19,6 @@ static CGFloat const kRoomTextButtonSize = 40;
 static CGFloat const kRoomTextFieldHeight = 40;
 static CGFloat const kRoomTextFieldMargin = 8;
 static CGFloat const kCallControlMargin = 8;
-static CGFloat const kAppLabelHeight = 20;
 
 // Helper view that contains a text field and a clear button.
 @interface ARDRoomTextField : UIView <UITextFieldDelegate>

webrtc/examples/objc/AppRTCDemo/mac/APPRTCViewController.h

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import <Cocoa/Cocoa.h>
+#import <AppKit/AppKit.h>
 
 @interface APPRTCViewController : NSViewController
 

webrtc/examples/objc/AppRTCDemo/mac/APPRTCViewController.m

@@ -47,12 +47,14 @@ static NSUInteger const kLogViewHeight = 280;
   NSTextField* _roomLabel;
   NSTextField* _roomField;
   NSTextView* _logView;
-  RTCNSGLVideoView* _localVideoView;
-  RTCNSGLVideoView* _remoteVideoView;
   CGSize _localVideoSize;
   CGSize _remoteVideoSize;
 }
 
+@synthesize delegate = _delegate;
+@synthesize localVideoView = _localVideoView;
+@synthesize remoteVideoView = _remoteVideoView;
+
 + (BOOL)requiresConstraintBasedLayout {
   return YES;
 }

webrtc/examples/objc/AppRTCDemo/mac/main.m

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import <Cocoa/Cocoa.h>
+#import <AppKit/AppKit.h>
 
 #import "APPRTCAppDelegate.h"