Bug 623072 - Reduce JSGC_MAX_MALLOC_BYTES usage. Note this change will slow some benchmarks down, but will overall make us use less memory. r=mfinkle

mobile/app/mobile.js

@@ -359,6 +359,7 @@ pref("content.sink.perf_deflect_count", 1000000);
 pref("content.sink.perf_parse_time", 50000000);
 
 pref("javascript.options.mem.gc_frequency", 300);
+pref("javascript.options.mem.high_water_mark", 32);
 pref("javascript.options.methodjit.chrome", false);
 
 pref("dom.max_chrome_script_run_time", 0); // disable slow script dialog for chrome