Add new MouseCursor interface for setting the mouse cursor.

ppapi/thunk/ppb_mouse_cursor_thunk.cc

Index: ppapi/thunk/ppb_mouse_cursor_thunk.cc
diff --git a/ppapi/thunk/ppb_mouse_cursor_thunk.cc b/ppapi/thunk/ppb_mouse_cursor_thunk.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f2c6f413278cd26ba71363ed2888f38f7543d143
--- /dev/null
+++ b/ppapi/thunk/ppb_mouse_cursor_thunk.cc
@@ -0,0 +1,36 @@
+// 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.
+
+#include "ppapi/c/ppb_mouse_cursor.h"
+#include "ppapi/thunk/thunk.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_instance_api.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+PP_Bool SetCursor(PP_Instance instance,
+                  PP_MouseCursor_Type type,
+                  PP_Resource image,
+                  const PP_Point* hot_spot) {
+  EnterInstance enter(instance);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.functions()->SetCursor(instance, type, image, hot_spot);
+}
+
+const PPB_MouseCursor_1_0 g_ppb_mouse_cursor_thunk = {
+  &SetCursor
+};
+
+}  // namespace
+
+const PPB_MouseCursor_1_0* GetPPB_MouseCursor_1_0_Thunk() {
+  return &g_ppb_mouse_cursor_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi