Fixed some build errors in UWP unit tests

Author: Sergio0694

UITests/UITests.App/RequestPageMessage.cs

@@ -12,7 +12,7 @@ public RequestPageMessage(string name)
         {
             PageName = name;
         }
-        
+
         public string PageName { get; }
     }
 }

UnitTests/UnitTests.UWP/Extensions/Test_LogicalTreeExtensions.cs

@@ -44,7 +44,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var textBlock = treeRoot.FindChildByName("TargetElement");
+                var textBlock = treeRoot.FindChild("TargetElement");
 
                 Assert.IsNotNull(textBlock, "Expected to find something.");
                 Assert.IsInstanceOfType(textBlock, typeof(TextBlock), "Didn't find expected typed element.");
@@ -79,7 +79,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var textBlock = treeRoot.FindChildByName("TargetElement");
+                var textBlock = treeRoot.FindChild("TargetElement");
 
                 Assert.IsNull(textBlock, "Didn't expect to find anything.");
             });
@@ -250,7 +250,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 await SetTestContentAsync(treeRoot);
 
                 // Main Test
-                var textBlocks = treeRoot.FindChildren<TextBlock>();
+                var textBlocks = treeRoot.FindChildren().OfType<TextBlock>();
 
                 Assert.IsNotNull(textBlocks, "Expected to find something.");
 
@@ -438,7 +438,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 Assert.IsNotNull(startingPoint, "Could not find starting element.");
 
                 // Main Test
-                var grid = startingPoint.FindParentByName("TargetElement");
+                var grid = startingPoint.FindParent("TargetElement");
 
                 Assert.IsNotNull(grid, "Expected to find Grid");
                 Assert.AreEqual(targetGrid, grid, "Grid didn't match expected.");
@@ -485,7 +485,7 @@ await App.DispatcherQueue.EnqueueAsync(async () =>
                 Assert.IsNotNull(startingPoint, "Could not find starting element.");
 
                 // Main Test
-                var grid = startingPoint.FindParentByName("TargetElement");
+                var grid = startingPoint.FindParent("TargetElement");
 
                 Assert.IsNull(grid, "Didn't expect to find anything.");
             });