Handle "//# sourceURL" comments in the Parser instead of the JS.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index c7bf8bfd45c0126a87e03bae0f4e3de4cd249098..b2ca1b96b7cb16f1e0aff87825b4b766878a97b3 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -785,6 +785,8 @@ class Parser : public ParserBase<ParserTraits> {
                                                bool is_generator,
                                                bool* ok);
 
+  void ParseSourceMapComment();

[yurys, 2014/06/05 13:55:21]

The name is a bit misleading as we actually parse sourceURL not
sourceMappingURL.

+
   void ThrowPendingError();
 
   Isolate* isolate_;