Remove FWL_WGTHITTEST_* defines in favour of enum class.

xfa/fwl/core/include/fwl_widgethittest.h

Index: xfa/fwl/core/include/fwl_widgethittest.h
diff --git a/xfa/fwl/core/include/fwl_widgethittest.h b/xfa/fwl/core/include/fwl_widgethittest.h
new file mode 100644
index 0000000000000000000000000000000000000000..b033a4579541b0779bc051e6d8f180cb832ff95d
--- /dev/null
+++ b/xfa/fwl/core/include/fwl_widgethittest.h
@@ -0,0 +1,35 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_INCLUDE_FWL_WIDGETHITTEST_H_
+#define XFA_FWL_CORE_INCLUDE_FWL_WIDGETHITTEST_H_
+
+enum class FWL_WidgetHitTest {

[Tom Sepez, 2016/05/03 18:33:19]

Can we call this FWL_WidgetHit?  It's not really a "hit test".  It may be a "hit
test result".  A hit test enum would describe types of hit tests, e.g. "hit test
using magic", "hit test using particles", etc. 

[dsinclair, 2016/05/03 19:34:48]

Done.

+  Unknown = 0,
+  Client,
+  Left,
+  Top,
+  Right,
+  Bottom,
+  LeftTop,
+  RightTop,
+  LeftBottom,
+  RightBottom,
+  Titlebar,
+  MinBox,
+  MaxBox,
+  CloseBox,
+  HScrollBar,
+  VScrollBar,
+  Border,
+  Edge,
+  Edit,
+  HyperLink,
+  UpButton,
+  DownButton
+};
+
+#endif  // XFA_FWL_CORE_INCLUDE_FWL_WIDGETHITTEST_H_