First step of support for parsing and ignoring generic methods.

pkg/compiler/lib/src/patch_parser.dart

Index: pkg/compiler/lib/src/patch_parser.dart
diff --git a/pkg/compiler/lib/src/patch_parser.dart b/pkg/compiler/lib/src/patch_parser.dart
index 593b08fb43519d980fbc981ed080fe4cca2b395c..3bc5ed015c0ed3f62d503d10f6a7456fe323fc96 100644
--- a/pkg/compiler/lib/src/patch_parser.dart
+++ b/pkg/compiler/lib/src/patch_parser.dart
@@ -160,9 +160,13 @@ import 'tokens/token.dart' show
 class PatchParserTask extends CompilerTask {
   final String name = "Patching Parser";
   final bool _enableConditionalDirectives;
+  final bool _enableGenericMethods;
 
-  PatchParserTask(Compiler compiler, {bool enableConditionalDirectives})
+  PatchParserTask(Compiler compiler,
+      {bool enableConditionalDirectives: false,
+       bool enableGenericMethods: false})
       : this._enableConditionalDirectives = enableConditionalDirectives,
+        this._enableGenericMethods = enableGenericMethods,
         super(compiler);
 
   /**
@@ -199,7 +203,8 @@ class PatchParserTask extends CompilerTask {
                                                         idGenerator);
       try {
         new PartialParser(patchListener,
-            enableConditionalDirectives: _enableConditionalDirectives)
+            enableConditionalDirectives: _enableConditionalDirectives,
+            enableGenericMethods: _enableGenericMethods)
             .parseUnit(tokens);
       } on ParserError catch (e) {
         // No need to recover from a parser error in platform libraries, user
@@ -218,7 +223,9 @@ class PatchParserTask extends CompilerTask {
     measure(() => reporter.withCurrentElement(cls, () {
       MemberListener listener = new PatchMemberListener(compiler, cls);
       Parser parser = new PatchClassElementParser(
-          listener, enableConditionalDirectives: _enableConditionalDirectives);
+          listener,
+          enableConditionalDirectives: _enableConditionalDirectives,
+          enableGenericMethods: _enableGenericMethods);
       try {
         Token token = parser.parseTopLevelDeclaration(cls.beginToken);
         assert(identical(token, cls.endToken.next));
@@ -270,9 +277,12 @@ class PatchMemberListener extends MemberListener {
  * declarations.
  */
 class PatchClassElementParser extends PartialParser {
-  PatchClassElementParser(Listener listener, {bool enableConditionalDirectives})
+  PatchClassElementParser(Listener listener,
+      {bool enableConditionalDirectives: false,
+       bool enableGenericMethods: false})
       : super(listener,
-          enableConditionalDirectives: enableConditionalDirectives);
+          enableConditionalDirectives: enableConditionalDirectives,
+          enableGenericMethods: enableGenericMethods);
 
   Token parseClassBody(Token token) => fullParseClassBody(token);
 }