Make WinRT/UWP platform classes more maintainable (#652)

* Split Platform.cs into partial classes

* Split the NavigationPageRenderer into partial classes for easier maintenance

* Simplify GetCommandBarAsync, remove unneeded comments

* Correct broken GetCommandBarAsync method

* Fix OSX build

diff --git a/Xamarin.Forms.Platform.WinRT/NavigationPageRenderer.cs b/Xamarin.Forms.Platform.WinRT/NavigationPageRenderer.cs
index 7745f9d..626d5c7 100644 (file)
--- a/Xamarin.Forms.Platform.WinRT/NavigationPageRenderer.cs
+++ b/Xamarin.Forms.Platform.WinRT/NavigationPageRenderer.cs
@@ -486,4 +486,4 @@ namespace Xamarin.Forms.Platform.WinRT
                        (this as ITitleProvider).BarForegroundBrush = GetBarForegroundBrush();
                }
        }
-}
\ No newline at end of file
+}