Update bytecode cache strategy for experimental Zen features

src/browser/app/profile/zen-browser.js

@@ -118,6 +118,10 @@ pref('browser.migrate.opera.enabled', true);
 
 pref('xpinstall.signatures.required', false);
 
+// Experimental Zen Features
+// Strategy to use for bytecode cache (Thanks https://github.com/gunir)
+pref('dom.script_loader.bytecode_cache.strategy', 2);
+
 #include better-fox.js
 
 // Betterfox overrides (Stay below the include directive)

src/dom/script/ScriptLoader-cpp.patch

@@ -0,0 +1,41 @@
+diff --git a/dom/script/ScriptLoader.cpp b/dom/script/ScriptLoader.cpp
+index e65533af04ea5f42c10477314c594c2c7bbc67b3..df4d63dafb838b67e64a91f26487106a77494516 100644
+--- a/dom/script/ScriptLoader.cpp
++++ b/dom/script/ScriptLoader.cpp
+@@ -2401,6 +2401,36 @@ void ScriptLoader::CalculateBytecodeCacheFlag(ScriptLoadRequest* aRequest) {
+       hasFetchCountMin = false;
+       break;
+     }
++    case 1: {
++      // 1!
++      hasSourceLengthMin = true;
++      hasFetchCountMin = true;
++      sourceLengthMin = 1024;
++      // If we were to optimize only for speed, without considering the impact
++      // on memory, we should set this threshold to 2. (Bug 900784 comment 120)
++      fetchCountMin = 1;
++      break;
++    }
++    case 2: {
++      // 2!
++      hasSourceLengthMin = true;
++      hasFetchCountMin = true;
++      sourceLengthMin = 1024;
++      // If we were to optimize only for speed, without considering the impact
++      // on memory, we should set this threshold to 2. (Bug 900784 comment 120)
++      fetchCountMin = 2;
++      break;
++    }
++    case 3: {
++      // 3!
++      hasSourceLengthMin = true;
++      hasFetchCountMin = true;
++      sourceLengthMin = 1024;
++      // If we were to optimize only for speed, without considering the impact
++      // on memory, we should set this threshold to 2. (Bug 900784 comment 120)
++      fetchCountMin = 3;
++      break;
++    }
+     default:
+     case 0: {
+       hasSourceLengthMin = true;