mus: Add debug key to print the server window hierarchy

components/mus/ws/server_window.h

Index: components/mus/ws/server_window.h
diff --git a/components/mus/ws/server_window.h b/components/mus/ws/server_window.h
index a518ff085e40a8893142a183e13539645a4e86ee..35edb3d3ea2f20fc81d6ee2913a08e95f396f618 100644
--- a/components/mus/ws/server_window.h
+++ b/components/mus/ws/server_window.h
@@ -143,6 +143,8 @@ class ServerWindow {
   }
   void SetProperty(const std::string& name, const std::vector<uint8_t>* value);
 
+  std::string GetName() const;

[msw, 2016/05/05 22:12:08]

nit: const std::string&?

[James Cook, 2016/05/05 22:53:18]

I can't, the string is a stack variable inside the function, created by parsing
the window property key.

[msw, 2016/05/05 23:10:06]

Acknowledged.

+
   void SetTextInputState(const ui::TextInputState& state);
   const ui::TextInputState& text_input_state() const {
     return text_input_state_;