Introduce Platform::cacheMetadataInCacheStorage() to store V8 code cache in CacheStorage

third_party/WebKit/Source/core/fetch/CachedMetadataHandler.h

Index: third_party/WebKit/Source/core/fetch/CachedMetadataHandler.h
diff --git a/third_party/WebKit/Source/core/fetch/CachedMetadataHandler.h b/third_party/WebKit/Source/core/fetch/CachedMetadataHandler.h
index d347d98cf41874c595db4b3903ec0d6a1ed988ce..056dc912dbd6a5633a1e64e876bd5a23569f5af0 100644
--- a/third_party/WebKit/Source/core/fetch/CachedMetadataHandler.h
+++ b/third_party/WebKit/Source/core/fetch/CachedMetadataHandler.h
@@ -31,6 +31,8 @@ public:
     virtual CachedMetadata* cachedMetadata(unsigned dataTypeID) const = 0;
     // Returns the encoding to which the cache is specific.
     virtual String encoding() const = 0;
+    // Returns whether we should aggressively cache the metadata.
+    virtual bool shouldAggressivelyCache() const = 0;
 
 protected:
     CachedMetadataHandler() { }