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

src/parser.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PARSER_H_
 #define V8_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"  // For CachedDataMode
@@ skipping 767 matching lines @@
       SingletonLogger* logger);
 
   // Consumes the ending }.
   ZoneList<Statement*>* ParseEagerFunctionBody(Handle<String> function_name,
                                                int pos,
                                                Variable* fvar,
                                                Token::Value fvar_init_op,
                                                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_;
 
   Handle<Script> script_;
   Scanner scanner_;
   PreParser* reusable_preparser_;
   Scope* original_scope_;  // for ES5 function declarations in sloppy eval
   Target* target_stack_;  // for break, continue statements
   ScriptData** cached_data_;
@@ skipping 35 matching lines @@
  private:
   static const int kLiteralTypeSlot = 0;
   static const int kElementsSlot = 1;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_