Prevents windows in chromeos from resizing bigger than their maximum size.

ui/aura/window_delegate.h

Index: ui/aura/window_delegate.h
diff --git a/ui/aura/window_delegate.h b/ui/aura/window_delegate.h
index f79b4692731740f2fde16838d43c86e2beae68f8..b6a95c063bc897db91391dd6568ebec849d3d688 100644
--- a/ui/aura/window_delegate.h
+++ b/ui/aura/window_delegate.h
@@ -36,6 +36,9 @@ class AURA_EXPORT WindowDelegate : public ui::EventHandler {
   // Returns the window's minimum size, or size 0,0 if there is no limit.
   virtual gfx::Size GetMinimumSize() const = 0;
 
+  // Returns the window's maximum size, or size 0,0 if there is no limit.
+  virtual gfx::Size GetMaximumSize() const = 0;
+
   // Called when the Window's position and/or size changes.
   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
                                const gfx::Rect& new_bounds) = 0;