include tree ancestors in type parameters iterable (IDEA-179958)

anonymous and local classes are inner classes which are not members of any other class, they are implicitly generics if applicable

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/GenericThrowTypes.java

@@ -1,4 +1,18 @@
 class C {
   static class MyThrowable<T> extends <error descr="Generic class may not extend 'java.lang.Throwable'">Throwable</error> { }
   void test() throws <error descr="Generic class may not extend 'java.lang.Throwable'">MyThrowable<Integer></error> { }
+
+  private class GenericOuter<T> {
+    public final Exception exn = new <error descr="Generic class may not extend 'java.lang.Throwable'">Exception</error>() { };
+
+    {
+      class LocalExn extends <error descr="Generic class may not extend 'java.lang.Throwable'">Exception</error> {}
+      throw new <error descr="Generic class may not extend 'java.lang.Throwable'">RuntimeException</error>(){};
+    }
+  }
+
+  public <X> void genericMethod() {
+    class LocalExn extends Exception {}
+    throw new RuntimeException() {};
+  }
 }