Update the maximize button when size constraints change.

ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc
index 2e9188a6b3df0582fa90fb41b67842bae6fdb933..bcd8f86ca36277753894bd15288d2be27c803a4c 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11_unittest.cc
@@ -116,6 +116,8 @@ class ShapedNonClientFrameView : public NonClientFrameView {
   }
   virtual void UpdateWindowTitle() OVERRIDE {
   }
+  virtual void SizeConstraintsChanged() OVERRIDE {
+  }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShapedNonClientFrameView);