ppapi: Add support for touch events.

ppapi/api/ppb_input_event.idl

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /**
  * This file defines the Input Event interfaces.
  */
 
 label Chrome {
@@ skipping 115 matching lines @@
    *
    * Register for this event using the PP_INPUTEVENT_CLASS_IME class.
    */
   PP_INPUTEVENT_TYPE_IME_COMPOSITION_END = 13,
 
   /**
    * Notification that an input method committed a string.
    *
    * Register for this event using the PP_INPUTEVENT_CLASS_IME class.
    */
-  PP_INPUTEVENT_TYPE_IME_TEXT = 14
+  PP_INPUTEVENT_TYPE_IME_TEXT = 14,
+
+  /**
+   * Notification that a finger was placed on a touch-enabled device.
+   *
+   * Register for this event using the PP_INPUTEVENT_CLASS_TOUCH class.
+   */
+  PP_INPUTEVENT_TYPE_TOUCHSTART = 15,
+
+  /**
+   * Notification that a finger was moved on a touch-enabled device.
+   *
+   * Register for this event using the PP_INPUTEVENT_CLASS_TOUCH class.
+   */
+  PP_INPUTEVENT_TYPE_TOUCHMOVE = 16,
+
+  /**
+   * Notification that a finger was released on a touch-enabled device.
+   *
+   * Register for this event using the PP_INPUTEVENT_CLASS_TOUCH class.
+   */
+  PP_INPUTEVENT_TYPE_TOUCHEND = 17,
+
+  /**
+   * Notification that a touch event was canceled.
+   *
+   * Register for this event using the PP_INPUTEVENT_CLASS_TOUCH class.
+   */
+  PP_INPUTEVENT_TYPE_TOUCHCANCEL = 18
 };
 
 /**
  * This enumeration contains event modifier constants. Each modifier is one
  * bit. Retrieve the modifiers from an input event using the GetEventModifiers
  * function on PPB_InputEvent.
  */
 [assert_size(4)]
 enum PP_InputEvent_Modifier {
   PP_INPUTEVENT_MODIFIER_SHIFTKEY         = 1 << 0,
@@ skipping 576 matching lines @@
    * @param[in] character_event A <code>PP_Resource</code> corresponding to a
    * keyboard event.
    *
    * @return A string var representing a single typed character for character
    * input events. For non-character input events the return value will be an
    * undefined var.
    */
   PP_Var GetCharacterText([in] PP_Resource character_event);
 };