ServiceWorker: Use SimpleCache for the script cache

content/browser/appcache/appcache_disk_cache.cc

Index: content/browser/appcache/appcache_disk_cache.cc
diff --git a/content/browser/appcache/appcache_disk_cache.cc b/content/browser/appcache/appcache_disk_cache.cc
index 382ed45fed2197ae8be5b861e1f310d18a118694..23b5470f8bea61c9b93cef4117f76c8ca8e2e970 100644
--- a/content/browser/appcache/appcache_disk_cache.cc
+++ b/content/browser/appcache/appcache_disk_cache.cc
@@ -177,7 +177,10 @@ class AppCacheDiskCache::ActiveCall {
 };
 
 AppCacheDiskCache::AppCacheDiskCache()
-    : is_disabled_(false) {
+#if defined(APPCACHE_USE_SIMPLE_CACHE)
+    : use_simple_cache_(true)

[kinuko, 2015/05/15 02:28:48]

nit: we can use delegated ctor too

[nhiroki, 2015/05/15 03:02:47]

Done (I thought delegated ctor was still under discussion).

+#endif
+{
 }
 
 AppCacheDiskCache::~AppCacheDiskCache() {
@@ -281,6 +284,10 @@ int AppCacheDiskCache::DoomEntry(int64 key,
   return (new ActiveCall(this))->DoomEntry(key, callback);
 }
 
+AppCacheDiskCache::AppCacheDiskCache(bool use_simple_cache)
+    : use_simple_cache_(use_simple_cache) {
+}
+
 AppCacheDiskCache::PendingCall::PendingCall()
     : call_type(CREATE),
       key(0),
@@ -310,14 +317,10 @@ int AppCacheDiskCache::Init(
   is_disabled_ = false;
   create_backend_callback_ = new CreateBackendCallbackShim(this);
 
-#if defined(APPCACHE_USE_SIMPLE_CACHE)
-  const net::BackendType backend_type = net::CACHE_BACKEND_SIMPLE;
-#else
-  const net::BackendType backend_type = net::CACHE_BACKEND_DEFAULT;
-#endif
   int rv = disk_cache::CreateCacheBackend(
       cache_type,
-      backend_type,
+      use_simple_cache_ ? net::CACHE_BACKEND_SIMPLE
+                        : net::CACHE_BACKEND_DEFAULT,
       cache_directory,
       cache_size,
       force,