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

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 17612 matching lines @@
 
   const char *source =
     "function outer() {\n"
     "function bar() {\n"
     "  AnalyzeStackOfDynamicScriptWithSourceURL();\n"
     "}\n"
     "function foo() {\n"
     "\n"
     "  bar();\n"
     "}\n"
+    "%s\n"
     "foo();\n"
     "}\n"
     "outer()\n%s";
 
   i::ScopedVector<char> code(1024);
-  i::OS::SNPrintF(code, source, "//# sourceURL=source_url");
+  i::OS::SNPrintF(code, source, "", "//# sourceURL=source_url");
   CHECK(CompileRunWithOrigin(code.start(), "url", 0, 0)->IsUndefined());
-  i::OS::SNPrintF(code, source, "//@ sourceURL=source_url");
+  i::OS::SNPrintF(code, source, "", "//@ sourceURL=source_url");
+  CHECK(CompileRunWithOrigin(code.start(), "url", 0, 0)->IsUndefined());
+
+  // More whitespace.
+  i::OS::SNPrintF(code, source, "",
+                  "//#  \t sourceURL \t = \t source_url\t\t  ");
+  CHECK(CompileRunWithOrigin(code.start(), "url", 0, 0)->IsUndefined());
+
+  // Two source URLs
+  i::OS::SNPrintF(code, source,
+                  "//# sourceURL=ignore_this", "//# sourceURL=source_url");
+  CHECK(CompileRunWithOrigin(code.start(), "url", 0, 0)->IsUndefined());
+
+  // Source URL in the middle of the script.
+  i::OS::SNPrintF(code, source, "//# sourceURL=source_url", "");
   CHECK(CompileRunWithOrigin(code.start(), "url", 0, 0)->IsUndefined());
 }
 
 
 TEST(DynamicWithSourceURLInStackTraceString) {
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
 
   const char *source =
     "function outer() {\n"
@@ skipping 4994 matching lines @@
   Local<Script> script = v8::ScriptCompiler::Compile(
       isolate, &script_source);
   Local<Value> script_name = script->GetUnboundScript()->GetScriptName();
   CHECK(!script_name.IsEmpty());
   CHECK(script_name->IsString());
   String::Utf8Value utf8_name(script_name);
   CHECK_EQ(url, *utf8_name);
   int line_number = script->GetUnboundScript()->GetLineNumber(0);
   CHECK_EQ(13, line_number);
 }