Revert of "Revert of Moved text decoding to the parser thread"

Source/core/dom/DocumentEncodingData.cpp

Index: Source/core/dom/DocumentEncodingData.cpp
diff --git a/Source/platform/PlatformThreadData.cpp b/Source/core/dom/DocumentEncodingData.cpp
similarity index 74%
copy from Source/platform/PlatformThreadData.cpp
copy to Source/core/dom/DocumentEncodingData.cpp
index b23dbed9d8e0a82d135e81fc75b4aef15f82d420..23d69f5ceb49e174b6a98e31f5b00a8b8d6c9c2a 100644
--- a/Source/platform/PlatformThreadData.cpp
+++ b/Source/core/dom/DocumentEncodingData.cpp
@@ -29,35 +29,28 @@
  */
 
 #include "config.h"
-#include "platform/PlatformThreadData.h"
+#include "core/dom/DocumentEncodingData.h"
 
-#include "platform/ThreadTimers.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/ThreadSpecific.h"
+#include "core/html/parser/TextResourceDecoder.h"
 
 namespace WebCore {
 
-static ThreadSpecific<PlatformThreadData>* s_data;
-
-PlatformThreadData::PlatformThreadData()
-    : m_threadTimers(adoptPtr(new ThreadTimers))
-{
-}
-
-PlatformThreadData::~PlatformThreadData()
+DocumentEncodingData::DocumentEncodingData()
+    : m_wasDetectedHeuristically(false)
+    , m_sawDecodingError(false)
 {
 }
 
-void PlatformThreadData::destroy()
+DocumentEncodingData::DocumentEncodingData(const TextResourceDecoder& decoder)
 {
-    m_threadTimers.clear();
+    m_encoding = decoder.encoding();
+    m_wasDetectedHeuristically = decoder.encodingWasDetectedHeuristically();
+    m_sawDecodingError = decoder.sawError();
 }
 
-PlatformThreadData& PlatformThreadData::current()
+void DocumentEncodingData::setEncoding(const WTF::TextEncoding& encoding)
 {
-    if (!s_data)
-        s_data = new ThreadSpecific<PlatformThreadData>;
-    return **s_data;
+    m_encoding = encoding;
 }
 
 } // namespace WebCore