Update Unit test for AppRTCMobile app

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

Index: webrtc/examples/objc/AppRTCDemo/mac/APPRTCViewController.m
diff --git a/webrtc/examples/objc/AppRTCDemo/mac/APPRTCViewController.m b/webrtc/examples/objc/AppRTCDemo/mac/APPRTCViewController.m
index 4d58d2ad3477b9951f0307ae34edf1a625c9370e..94178abf4bb818a153b74aecfaaee1ad5872af18 100644
--- a/webrtc/examples/objc/AppRTCDemo/mac/APPRTCViewController.m
+++ b/webrtc/examples/objc/AppRTCDemo/mac/APPRTCViewController.m
@@ -17,10 +17,10 @@
 
 #import "ARDAppClient.h"
 
-static NSUInteger const kContentWidth = 1280;
-static NSUInteger const kContentHeight = 720;
+static NSUInteger const kContentWidth = 1080;
+static NSUInteger const kContentHeight = 520;
 static NSUInteger const kRoomFieldWidth = 80;
-static NSUInteger const kLogViewHeight = 280;
+static NSUInteger const kLogViewHeight = 180;
 
 @class APPRTCMainView;
 @protocol APPRTCMainViewDelegate
@@ -66,20 +66,25 @@ - (instancetype)initWithFrame:(NSRect)frame {
 
 - (void)updateConstraints {
   NSParameterAssert(
-      _roomField != nil && _scrollView != nil && _remoteVideoView != nil);
+      _roomField != nil && _scrollView != nil && _remoteVideoView != nil
+      && _localVideoView != nil);
   [self removeConstraints:[self constraints]];
   NSDictionary* viewsDictionary =
       NSDictionaryOfVariableBindings(_roomLabel,
                                      _roomField,
                                      _scrollView,
+                                     _localVideoView,
                                      _remoteVideoView);
 
-  NSSize remoteViewSize = [self remoteVideoViewSize];
+  NSSize remoteViewSize = NSMakeSize(kContentWidth, kContentHeight);
+  NSSize localViewSize = NSMakeSize(200, 120);
   NSDictionary* metrics = @{
     @"kLogViewHeight" : @(kLogViewHeight),
     @"kRoomFieldWidth" : @(kRoomFieldWidth),
     @"remoteViewWidth" : @(remoteViewSize.width),
     @"remoteViewHeight" : @(remoteViewSize.height),
+    @"localViewWidth" : @(localViewSize.width),
+    @"localViewHeight" : @(localViewSize.height),
   };
   // Declare this separately to avoid compiler warning about splitting string
   // within an NSArray expression.
@@ -88,10 +93,12 @@ - (void)updateConstraints {
        "-[_remoteVideoView(remoteViewHeight)]-|";
   NSArray* constraintFormats = @[
       verticalConstraint,
+      @"V:|-(>=100)-[_localVideoView(localViewHeight)]-30-|",
       @"|-[_roomLabel]",
       @"|-[_roomField(kRoomFieldWidth)]",
       @"|-[_scrollView(remoteViewWidth)]-|",
       @"|-[_remoteVideoView(remoteViewWidth)]-|",
+      @"|-30-[_localVideoView(localViewWidth)]-(>=100)-|",
   ];
   for (NSString* constraintFormat in constraintFormats) {
     NSArray* constraints =
@@ -134,7 +141,7 @@ - (void)videoView:(RTCNSGLVideoView*)videoView
   } else {
     return;
   }
-  [self setNeedsUpdateConstraints:YES];
+  //[self setNeedsUpdateConstraints:YES];
 }
 
 #pragma mark - Private
@@ -188,8 +195,11 @@ - (void)setupViews {
   _remoteVideoView.delegate = self;
   [self addSubview:_remoteVideoView];
 
-  // TODO(tkchin): create local video view.
-  // https://code.google.com/p/webrtc/issues/detail?id=3417.
+  _localVideoView = [[RTCNSGLVideoView alloc] initWithFrame:NSZeroRect
+                                                pixelFormat:pixelFormat];
+  [_localVideoView setTranslatesAutoresizingMaskIntoConstraints:NO];
+  _localVideoView.delegate = self;
+  [self addSubview:_localVideoView];
 }
 
 - (NSSize)remoteVideoViewSize {
@@ -201,7 +211,11 @@ - (NSSize)remoteVideoViewSize {
 }
 
 - (NSSize)localVideoViewSize {
-  return NSZeroSize;
+  if (_localVideoSize.width > 0 && _localVideoSize.height > 0) {
+    return _localVideoSize;
+  } else {
+    return NSMakeSize(200, 120);
+  }
 }
 
 @end
@@ -258,6 +272,7 @@ - (void)appClient:(ARDAppClient *)client
 - (void)appClient:(ARDAppClient *)client
     didReceiveLocalVideoTrack:(RTCVideoTrack *)localVideoTrack {
   _localVideoTrack = localVideoTrack;
+  [_localVideoTrack addRenderer:self.mainView.localVideoView];
 }
 
 - (void)appClient:(ARDAppClient *)client