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

third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.cpp

Index: third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.cpp b/third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.cpp
index 94bb106cede79388baf860788d27fae901f18d82..eb5221a57f355e672ea12af083355ca0c78c9853 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptStreamer.cpp
@@ -280,10 +280,12 @@ private:
         ASSERT(lengthOfBOM == 0 || m_queueTailPosition == 0);
 
         CachedMetadataHandler* cacheHandler = streamer->resource()->cacheHandler();
-        if (cacheHandler && cacheHandler->cachedMetadata(V8ScriptRunner::tagForCodeCache(cacheHandler))) {
-            // The resource has a code cache, so it's unnecessary to stream and
-            // parse the code. Cancel the streaming and resume the non-streaming
-            // code path.
+        if (cacheHandler && (cacheHandler->shouldAggressivelyCache() || cacheHandler->cachedMetadata(V8ScriptRunner::tagForCodeCache(cacheHandler)))) {
+            // When we should aggressively cache the code cache, we can't use
+            // SourceStream because currently V8ScriptRunner doesn't supoprt
+            // code caching with SourceStream. And if the resource has a code
+            // cache, it's unnecessary to stream and parse the code.
+            // Cancel the streaming and resume the non-streaming code path.
             streamer->suppressStreaming();
             cancel();
             return;