Makes windowmanager draw non-client area

components/mus/public/cpp/lib/window_tree_client_impl.h

Index: components/mus/public/cpp/lib/window_tree_client_impl.h
diff --git a/components/mus/public/cpp/lib/window_tree_client_impl.h b/components/mus/public/cpp/lib/window_tree_client_impl.h
index 38a8c413eacc9ab7d60ee6f91d017a9b1af59382..780c4bec897728942391e50f9ad8c07b914f1831 100644
--- a/components/mus/public/cpp/lib/window_tree_client_impl.h
+++ b/components/mus/public/cpp/lib/window_tree_client_impl.h
@@ -12,6 +12,7 @@
 #include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
 
 namespace gfx {
+class Insets;
 class Size;
 }
 
@@ -52,7 +53,7 @@ class WindowTreeClientImpl : public WindowTreeConnection,
   bool OwnsWindow(Id id) const;
 
   void SetBounds(Id window_id, const gfx::Rect& bounds);
-  void SetClientArea(Id window_id, const gfx::Rect& client_area);
+  void SetClientArea(Id window_id, const gfx::Insets& client_area);
   void SetFocus(Id window_id);
   void SetVisible(Id window_id, bool visible);
   void SetProperty(Id window_id,
@@ -119,8 +120,8 @@ class WindowTreeClientImpl : public WindowTreeConnection,
                              mojo::RectPtr old_bounds,
                              mojo::RectPtr new_bounds) override;
   void OnClientAreaChanged(uint32_t window_id,
-                           mojo::RectPtr old_client_area,
-                           mojo::RectPtr new_client_area) override;
+                           mojo::InsetsPtr old_client_area,
+                           mojo::InsetsPtr new_client_area) override;
   void OnWindowViewportMetricsChanged(
       mojom::ViewportMetricsPtr old_metrics,
       mojom::ViewportMetricsPtr new_metrics) override;