WebUIHandler for chrome://keyboard

ui/keyboard/keyboard_util.h

Index: ui/keyboard/keyboard_util.h
diff --git a/ui/keyboard/keyboard_util.h b/ui/keyboard/keyboard_util.h
index 84510bf7b08296a6b96b5c1d12ce7aded1fbaefe..0674fa12fe0c4d4c1120e1cf858d251a9c75719e 100644
--- a/ui/keyboard/keyboard_util.h
+++ b/ui/keyboard/keyboard_util.h
@@ -5,13 +5,32 @@
 #ifndef UI_KEYBOARD_KEYBOARD_UTIL_H_
 #define UI_KEYBOARD_KEYBOARD_UTIL_H_
 
+#include <string>
+
 #include "ui/keyboard/keyboard_export.h"
 
+namespace base {
+class ListValue;
+}
+
+namespace ui {
+class KeyEvent;
+}
+
 namespace keyboard {
 
 // Returns true if the virtual keyboard is enabled.
 KEYBOARD_EXPORT bool IsKeyboardEnabled();
 
+// Creates a ui::KeyEvent from the argument base::ListValue that is passed to
+// the synthetic input APIs (either the Extension API or the WebUI API).  The
+// returned ui::KeyEvent is owned by the caller.  If an error occurs, NULL is
+// returned and |error| will be populated with a description of the error.  For
+// a description of the expected input, please see
+// chrome/common/extensions/api/experimental_input_virtual_keyboard.json
+KEYBOARD_EXPORT ui::KeyEvent* KeyEventFromArgs(const base::ListValue* args,
+                                               std::string* error);
+
 }  // namespace keyboard
 
 #endif  // UI_KEYBOARD_KEYBOARD_UTIL_H_