Enable ServiceWorkerScriptFullCodeCache by default

Bug: 768705,788619
Change-Id: I18474261a0bb443b5ed7186adb8bc68227ece26c
Reviewed-on: https://chromium-review.googlesource.com/994492
Commit-Queue: Tsuyoshi Horo <horo@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547946}

content/browser/service_worker/service_worker_browsertest.cc

@@ -2632,6 +2632,10 @@ class ServiceWorkerVersionBrowserV8CacheTest
       public ServiceWorkerVersion::Listener {
  public:
   using self = ServiceWorkerVersionBrowserV8CacheTest;
+  ServiceWorkerVersionBrowserV8CacheTest() {
+    scoped_feature_list_.InitAndDisableFeature(
+        features::kServiceWorkerScriptFullCodeCache);
+  }
   ~ServiceWorkerVersionBrowserV8CacheTest() override {
     if (version_)
       version_->RemoveListener(this);
@@ -2655,6 +2659,9 @@ class ServiceWorkerVersionBrowserV8CacheTest
 
   base::Closure cache_updated_closure_;
   size_t metadata_size_ = 0;
+
+ private:
+  base::test::ScopedFeatureList scoped_feature_list_;
 };
 
 IN_PROC_BROWSER_TEST_F(ServiceWorkerVersionBrowserV8CacheTest, Restart) {

content/public/common/content_features.cc

@@ -335,7 +335,7 @@ const base::Feature kServiceWorkerPaymentApps{
 
 // Generate V8 full code cache of service worker scripts.
 const base::Feature kServiceWorkerScriptFullCodeCache{
-    "ServiceWorkerScriptFullCodeCache", base::FEATURE_DISABLED_BY_DEFAULT};
+    "ServiceWorkerScriptFullCodeCache", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Establish direct connection from clients to the service worker.
 const base::Feature kServiceWorkerServicification{