Bug 1459555 - Part 3: Allow off-main-thread BinAST compilation. (r=arai)

--HG--
extra : rebase_source : a2bd306c4c142432bd64ca4f63f858cdf45d1bbe

js/src/vm/OffThreadScriptCompilation.cpp

@@ -37,11 +37,6 @@ CanDoOffThread(JSContext* cx, const ReadOnlyCompileOptions& options, size_t leng
     static const size_t HUGE_BC_LENGTH = 367 * 1000;
     static const size_t HUGE_BINAST_LENGTH = 70 * 1000;
 
-    // TODO: We can't decode BinAST off main thread until bug 1459555 is fixed.
-    if (what == OffThread::DecodeBinAST) {
-        return false;
-    }
-
     // These are heuristics which the caller may choose to ignore (e.g., for
     // testing purposes).
     if (!options.forceAsync) {