Add KeyName and KeyLocation to frog dom.

client/dom/src/KeyName.dart

Index: client/dom/src/KeyName.dart
diff --git a/client/dom/snippets/events/KeyboardEvent.dart.snippet b/client/dom/src/KeyName.dart
similarity index 92%
rename from client/dom/snippets/events/KeyboardEvent.dart.snippet
rename to client/dom/src/KeyName.dart
index 7631b88a7381f6fd5d0f6871235acee55cb29633..7c8aae34db41aae7897778b294576dba417f9455 100644
--- a/client/dom/snippets/events/KeyboardEvent.dart.snippet
+++ b/client/dom/src/KeyName.dart
@@ -3,48 +3,6 @@
 // BSD-style license that can be found in the LICENSE file.
 
 /**
- * Defines the standard key locations returned by
- * KeyboardEvent.getKeyLocation.
- */
-interface KeyLocation {
-
-  /**
-   * The event key is not distinguished as the left or right version
-   * of the key, and did not originate from the numeric keypad (or did not
-   * originate with a virtual key corresponding to the numeric keypad).
-   */
-  static final int STANDARD = 0;
-
-  /**
-   * The event key is in the left key location.
-   */
-  static final int LEFT = 1;
-
-  /**
-   * The event key is in the right key location.
-   */
-  static final int RIGHT = 2;
-
-  /**
-   * The event key originated on the numeric keypad or with a virtual key
-   * corresponding to the numeric keypad.
-   */
-  static final int NUMPAD = 3;
-
-  /**
-   * The event key originated on a mobile device, either on a physical
-   * keypad or a virtual keyboard.
-   */
-  static final int MOBILE = 4;
-
-  /**
-   * The event key originated on a game controller or a joystick on a mobile
-   * device.
-   */
-  static final int JOYSTICK = 5;
-}
-
-/**
  * Defines the standard keyboard identifier names for keys that are returned
  * by KeyEvent.getKeyboardIdentifier when the key does not have a direct
  * unicode mapping.