[Remoting Client] Always ResizeToFit when desktop/surface size is changed

remoting/client/desktop_viewport.h

Index: remoting/client/desktop_viewport.h
diff --git a/remoting/client/desktop_viewport.h b/remoting/client/desktop_viewport.h
index 8fb7377bad5669c1a33db5d39fddd473f97fefb4..2133f115226b983a164de08b5df5f5f5a46bd80e 100644
--- a/remoting/client/desktop_viewport.h
+++ b/remoting/client/desktop_viewport.h
@@ -95,11 +95,8 @@ class DesktopViewport {
       const Bounds& bounds,
       const ViewMatrix::Point& point);
 
-  ViewMatrix::Vector2D desktop_size_;
-  ViewMatrix::Vector2D surface_size_;
-
-  bool desktop_size_ready_ = false;
-  bool surface_size_ready_ = false;
+  ViewMatrix::Vector2D desktop_size_{0.f, 0.f};
+  ViewMatrix::Vector2D surface_size_{0.f, 0.f};
 
   ViewMatrix desktop_to_surface_transform_;