Added web-exposed constructor for Touch and TouchEvent

third_party/WebKit/Source/core/dom/TouchInit.idl

Index: third_party/WebKit/Source/core/dom/TouchInit.idl
diff --git a/third_party/WebKit/Source/core/dom/TouchInit.idl b/third_party/WebKit/Source/core/dom/TouchInit.idl
new file mode 100644
index 0000000000000000000000000000000000000000..ba733b6f76bce06298896062b233c833a062bf50
--- /dev/null
+++ b/third_party/WebKit/Source/core/dom/TouchInit.idl
@@ -0,0 +1,20 @@
+// Copyright 2015 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.
+
+// https://w3c.github.io/touch-events/#touch-interface
+
+dictionary TouchInit {
+    required long        identifier;
+    required EventTarget target;
+             double      clientX = 0;
+             double      clientY = 0;
+             double      screenX = 0;
+             double      screenY = 0;
+             double      pageX = 0;
+             double      pageY = 0;
+             float       radiusX = 0;
+             float       radiusY = 0;
+             float       rotationAngle = 0;
+             float       force = 0;
+};