JS backend: report parser errors and warnings

js/js.parser/src/com/google/gwt/dev/js/AbortParsingException.java

@@ -15,16 +15,9 @@
  */
 package com.google.gwt.dev.js;
 
-// An unchecked wrapper exception to interop with Rhino.
-class UncheckedJsParserException extends RuntimeException {
-
-  private final JsParserException parserException;
-
-  public UncheckedJsParserException(JsParserException parserException) {
-    this.parserException = parserException;
-  }
-
-  public JsParserException getParserException() {
-    return parserException;
-  }
+/**
+ * Used only to exit parser on error
+ */
+public class AbortParsingException extends RuntimeException {
+  public AbortParsingException() {}
 }

js/js.parser/src/com/google/gwt/dev/js/JsParser.java

@@ -79,9 +79,6 @@ public class JsParser {
             popScope();
             return stmts;
         }
-        catch (UncheckedJsParserException e) {
-            throw e.getParserException();
-        }
         finally {
             Context.exit();
         }