Script streaming: remove byte order marks, detect encoding based on them.

Source/bindings/core/v8/V8ScriptRunner.cpp

Index: Source/bindings/core/v8/V8ScriptRunner.cpp
diff --git a/Source/bindings/core/v8/V8ScriptRunner.cpp b/Source/bindings/core/v8/V8ScriptRunner.cpp
index 32c1659c872e8b86209ad46c5ca06629f3132916..71a86becbd9539d4911793591189016ed0bade6c 100644
--- a/Source/bindings/core/v8/V8ScriptRunner.cpp
+++ b/Source/bindings/core/v8/V8ScriptRunner.cpp
@@ -127,9 +127,7 @@ v8::Local<v8::Script> V8ScriptRunner::compileScript(v8::Handle<v8::String> code,
         const v8::ScriptCompiler::CachedData* newCachedData = streamer->source()->GetCachedData();
         if (newCachedData) {
             resource->clearCachedMetadata();
-            // Temporarily disable cached metadata for streaming; it's
-            // producing broken data. FIXME: enable it again.
-            // resource->setCachedMetadata(streamer->cachedDataType(), reinterpret_cast<const char*>(newCachedData->data), newCachedData->length);
+            resource->setCachedMetadata(streamer->cachedDataType(), reinterpret_cast<const char*>(newCachedData->data), newCachedData->length, Resource::CacheLocally);
         }
     } else if (!resource || !resource->url().protocolIsInHTTPFamily() || code->Length() < 1024) {
         v8::ScriptCompiler::Source source(code, origin);