[wasm] asm.js: Add asm_wasm variant to test asm.js->wasm pipeline.

tools/run-tests.py

 #!/usr/bin/env python
 #
 # 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
@@ skipping 86 matching lines @@
 }
 
 TIMEOUT_DEFAULT = 60
 
 VARIANTS = ["default", "turbofan", "ignition_staging"]
 
 MORE_VARIANTS = [
   "ignition",
   "stress",
   "turbofan_opt",
+  "asm_wasm",
 ]
 
 EXHAUSTIVE_VARIANTS = VARIANTS + MORE_VARIANTS
 
 VARIANT_ALIASES = {
   # The default for developer workstations.
   "dev": VARIANTS,
   # Additional variants, run on all bots.
   "more": MORE_VARIANTS,
   # Additional variants, run on a subset of bots.
@@ skipping 781 matching lines @@
         "--coverage-dir=%s" % options.sancov_dir])
     except:
       print >> sys.stderr, "Error: Merging sancov files failed."
       exit_code = 1
 
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())