Automatic deployment of the virtual keyboard.

ash/virtual_keyboard_controller.h

Index: ash/virtual_keyboard_controller.h
diff --git a/ash/virtual_keyboard_controller.h b/ash/virtual_keyboard_controller.h
index ebbc0fde1858a41f2e32c56d971f967ee831eed1..edae1132bc6adb4d6e680a36297a565525601040 100644
--- a/ash/virtual_keyboard_controller.h
+++ b/ash/virtual_keyboard_controller.h
@@ -7,20 +7,30 @@
 
 #include "ash/ash_export.h"
 #include "ash/shell_observer.h"
+#include "ui/events/input_device_event_observer.h"
 
 namespace ash {
 
 // This class observes enter/leaving maximized mode for virtual keyboard.
-class ASH_EXPORT VirtualKeyboardController : public ShellObserver {
+class ASH_EXPORT VirtualKeyboardController
+    : public ui::InputDeviceEventObserver {
  public:
   VirtualKeyboardController();
   virtual ~VirtualKeyboardController();
 
-  // ShellObserver:
-  virtual void OnMaximizeModeStarted() override;
-  virtual void OnMaximizeModeEnded() override;
+  // InputDeviceObserver:
+  virtual void OnTouchscreenDeviceConfigurationChanged() override;
+  virtual void OnKeyboardDeviceConfigurationChanged() override;
 
  private:
+  virtual void UpdateDevices();
+  virtual bool ShouldShowKeyboard();
+  virtual void SetKeyboardEnabled(bool enabled);
+
+  bool has_external_keyboard_;
+  bool has_internal_keyboard_;
+  bool has_touchscreen_;
+
   DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardController);
 };