WIP: Introduce CompressibleString

third_party/WebKit/Source/wtf/WTFThreadData.h

Index: third_party/WebKit/Source/wtf/WTFThreadData.h
diff --git a/third_party/WebKit/Source/wtf/WTFThreadData.h b/third_party/WebKit/Source/wtf/WTFThreadData.h
index 0dbd7e7c6baad8383340a53c35bf04bf1b21fec1..f94527efda89b26dd6c4a49c7e37df0d93d3e201 100644
--- a/third_party/WebKit/Source/wtf/WTFThreadData.h
+++ b/third_party/WebKit/Source/wtf/WTFThreadData.h
@@ -38,9 +38,11 @@
 namespace WTF {
 
 class AtomicStringTable;
+class CompressibleStringTable;
 struct ICUConverterWrapper;
 
 typedef void (*AtomicStringTableDestructor)(AtomicStringTable*);
+typedef void (*CompressibleStringTableDestructor)(CompressibleStringTable*);
 
 class WTF_EXPORT WTFThreadData {
     WTF_MAKE_NONCOPYABLE(WTFThreadData);
@@ -53,16 +55,24 @@ public:
         return m_atomicStringTable;
     }
 
+    CompressibleStringTable* compressibleStringTable()
+    {
+        return m_compressibleStringTable;
+    }
+
     ICUConverterWrapper& cachedConverterICU() { return *m_cachedConverterICU; }
 
 private:
     AtomicStringTable* m_atomicStringTable;
     AtomicStringTableDestructor m_atomicStringTableDestructor;
+    CompressibleStringTable* m_compressibleStringTable;
+    CompressibleStringTableDestructor m_compressibleStringTableDestructor;
     OwnPtr<ICUConverterWrapper> m_cachedConverterICU;
 
     static ThreadSpecific<WTFThreadData>* staticData;
     friend WTFThreadData& wtfThreadData();
     friend class AtomicStringTable;
+    friend class CompressibleStringTable;
 };
 
 inline WTFThreadData& wtfThreadData()