[CRD iOS] Preserve viewport state when toggling the soft keyboard

remoting/client/ui/desktop_viewport.h

Index: remoting/client/ui/desktop_viewport.h
diff --git a/remoting/client/ui/desktop_viewport.h b/remoting/client/ui/desktop_viewport.h
index c000ba4b05d02bacf946ee9eb0907dd4dc3f0ec6..f22451eb3c7e9d8396a329bd529e299e8fde931a 100644
--- a/remoting/client/ui/desktop_viewport.h
+++ b/remoting/client/ui/desktop_viewport.h
@@ -35,10 +35,11 @@ class DesktopViewport {
   DesktopViewport();
   ~DesktopViewport();
 
-  // Sets the |desktop_size_| and initializes the viewport when necessary.
+  // Sets the |desktop_size_| and (re)initializes the viewport.
   void SetDesktopSize(int desktop_width, int desktop_height);
 
-  // Sets the |surface_size_| and initializes the viewport when necessary.
+  // Sets the |surface_size_| and (re)initializes the viewport if both
+  // dimensions are changed.
   void SetSurfaceSize(int surface_width, int surface_height);
 
   // Translates the desktop on the surface's reference frame by <dx, dy>.