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

Source/bindings/core/v8/V8ScriptRunner.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 109 matching lines @@
         // Failed resources should never get this far.
         ASSERT(!resource->errorOccurred());
         ASSERT(streamer->isFinished());
         ASSERT(!streamer->streamingSuppressed());
         script = v8::ScriptCompiler::Compile(isolate, streamer->source(), code, origin);
         // Whether to produce the cached data or not is decided when the
         // streamer is started. Here we only need to get the data out.
         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);
         script = v8::ScriptCompiler::Compile(isolate, &source, v8::ScriptCompiler::kNoCompileOptions);
     } else {
         switch (cacheOptions) {
         case V8CacheOptionsParse:
             cacheTag = tagForParserCache();
             script = resource->cachedMetadata(cacheTag)
                 ? compileAndConsumeCache(isolate, code, origin, resource, v8::ScriptCompiler::kConsumeParserCache, cacheTag)
@@ skipping 149 matching lines @@
 {
     return StringHash::hash(v8::V8::GetVersion()) * 2;
 }
 
 unsigned V8ScriptRunner::tagForCodeCache()
 {
     return StringHash::hash(v8::V8::GetVersion()) * 2 + 1;
 }
 
 } // namespace blink