[Interpreter] Support top-level code.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 2f1405f57d10825a38899967a80d41ffca23d5cd..71653c8b94482c505f77e370f565d5e8cabb8a53 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -8685,6 +8685,9 @@ class String: public Name {
   // For use during stack traces.  Performs rudimentary sanity check.
   bool LooksValid();
 
+  // Used for flags such as --hydrogen-filter.
+  bool PassesFilter(const char* raw_filter);

[Michael Starzinger, 2015/10/07 09:53:29]

As discussed offline: Can we add a TODO here that this is a temporary workaround
until compiler.cc can use JSFunction::PassesFilter for top-level code. Feel free
to name me in the TODO.

[rmcilroy, 2015/10/07 10:05:37]

Added TODO.

+
   // Dispatched behavior.
   void StringShortPrint(StringStream* accumulator);
   void PrintUC16(std::ostream& os, int start = 0, int end = -1);  // NOLINT