[CacheStorage] Updating cache size within the scheduled operation.

content/browser/cache_storage/cache_storage_cache.h

Index: content/browser/cache_storage/cache_storage_cache.h
diff --git a/content/browser/cache_storage/cache_storage_cache.h b/content/browser/cache_storage/cache_storage_cache.h
index 1d5996c053f32ee55639379574d2f9622877f158..9564d710358540ed5382f07aa15473f96bd78b35 100644
--- a/content/browser/cache_storage/cache_storage_cache.h
+++ b/content/browser/cache_storage/cache_storage_cache.h
@@ -325,8 +325,9 @@ class CONTENT_EXPORT CacheStorageCache {
   // Asynchronously calculates the current cache size, notifies the quota
   // manager of any change from the last report, and sets cache_size_ to the new
   // size.
-  void UpdateCacheSize();
+  void UpdateCacheSize(const base::Closure& callback);
   void UpdateCacheSizeGotSize(std::unique_ptr<CacheStorageCacheHandle>,
+                              const base::Closure& callback,
                               int current_cache_size);
 
   // Returns ERROR_NOT_FOUND if not found. Otherwise deletes and returns OK.