JRE-307 Wrong dpi reported on Wayland

(cherry picked from commit 15693661cc)

test/jdk/jb/java/awt/Toolkit/ScreenResolution.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+import java.awt.Toolkit;
+
+/* @test
+ * @summary checks that screen resolution is in acceptable range
+ */
+
+public class ScreenResolution {
+
+    public static void main(String[] args) throws Exception {
+        int pixelPerInch = java.awt.Toolkit.getDefaultToolkit().getScreenResolution();
+
+        if (pixelPerInch <= 0 || pixelPerInch > 1000)
+            throw new RuntimeException("Invalid resolution: " + pixelPerInch);
+    }
+}