Add --keyboard-usability-test flag and always show keyboard unless manually hide

ui/keyboard/keyboard_controller.h

Index: ui/keyboard/keyboard_controller.h
diff --git a/ui/keyboard/keyboard_controller.h b/ui/keyboard/keyboard_controller.h
index 02212a274a291e94cdbe06699179ef6672ace872..93f4902d07d51de0c54298159c03071b900d00b1 100644
--- a/ui/keyboard/keyboard_controller.h
+++ b/ui/keyboard/keyboard_controller.h
@@ -13,6 +13,8 @@
 #include "ui/base/ime/input_method_observer.h"
 #include "ui/keyboard/keyboard_export.h"
 
+class CommandLine;
+
 namespace aura {
 class Window;
 }
@@ -47,6 +49,10 @@ class KEYBOARD_EXPORT KeyboardController : public ui::InputMethodObserver,
   explicit KeyboardController(KeyboardControllerProxy* proxy);
   virtual ~KeyboardController();
 
+  void set_command_line_for_testing(CommandLine* command_line) {
+    command_line_for_testing_ = command_line;
+  }
+
   // Returns the container for the keyboard, which is owned by
   // KeyboardController.
   aura::Window* GetContainerWindow();
@@ -92,6 +98,9 @@ class KEYBOARD_EXPORT KeyboardController : public ui::InputMethodObserver,
   ui::InputMethod* input_method_;
   bool keyboard_visible_;
 
+  // If non-NULL, used in place of the real command line.
+  CommandLine* command_line_for_testing_;
+

[sadrul, 2013/10/24 01:21:01]

You shouldn't need this. See comment in test.

[bshe, 2013/10/24 03:35:36]

Done.

   ObserverList<KeyboardControllerObserver> observer_list_;
 
   base::WeakPtrFactory<KeyboardController> weak_factory_;