Revert CompressibleString (and its UMA)

third_party/WebKit/Source/bindings/core/v8/V8ValueCache.h

Index: third_party/WebKit/Source/bindings/core/v8/V8ValueCache.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8ValueCache.h b/third_party/WebKit/Source/bindings/core/v8/V8ValueCache.h
index ca51342075f7850754d13b27aa161cd2e7c334fe..3bc2e00a289657813f6d9724aad46ce8651f8fc3 100644
--- a/third_party/WebKit/Source/bindings/core/v8/V8ValueCache.h
+++ b/third_party/WebKit/Source/bindings/core/v8/V8ValueCache.h
@@ -28,7 +28,6 @@
 
 #include "bindings/core/v8/V8GlobalValueMap.h"
 #include "core/CoreExport.h"
-#include "platform/text/CompressibleString.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashMap.h"
 #include "wtf/Noncopyable.h"
@@ -65,41 +64,12 @@ public:
     static void DisposeWeak(const v8::WeakCallbackInfo<WeakCallbackDataType>&);
 };
 
-class CompressibleStringCacheMapTraits : public V8GlobalValueMapTraits<CompressibleStringImpl*, v8::String, v8::kWeakWithParameter> {
-    STATIC_ONLY(CompressibleStringCacheMapTraits);
-public:
-    // Weak traits:
-    typedef CompressibleStringImpl WeakCallbackDataType;
-    typedef v8::GlobalValueMap<CompressibleStringImpl*, v8::String, CompressibleStringCacheMapTraits> MapType;
-
-    static WeakCallbackDataType* WeakCallbackParameter(
-        MapType* map, CompressibleStringImpl* key, v8::Local<v8::String>& value) { return key; }
-    static void DisposeCallbackData(WeakCallbackDataType* callbackData) { }
-
-    static MapType* MapFromWeakCallbackInfo(
-        const v8::WeakCallbackInfo<WeakCallbackDataType>&);
-
-    static CompressibleStringImpl* KeyFromWeakCallbackInfo(
-        const v8::WeakCallbackInfo<WeakCallbackDataType>& data)
-    {
-        return data.GetParameter();
-    }
-
-    static void OnWeakCallback(const v8::WeakCallbackInfo<WeakCallbackDataType>&);
-
-    static void Dispose(v8::Isolate*, v8::Global<v8::String> value, CompressibleStringImpl* key);
-    static void DisposeWeak(const v8::WeakCallbackInfo<WeakCallbackDataType>&);
-};
 
 class CORE_EXPORT StringCache {
     USING_FAST_MALLOC(StringCache);
     WTF_MAKE_NONCOPYABLE(StringCache);
 public:
-    explicit StringCache(v8::Isolate* isolate)
-        : m_stringCache(isolate)
-        , m_compressibleStringCache(isolate)
-    {
-    }
+    explicit StringCache(v8::Isolate* isolate) : m_stringCache(isolate) { }
 
     v8::Local<v8::String> v8ExternalString(v8::Isolate* isolate, StringImpl* stringImpl)
     {
@@ -109,13 +79,6 @@ public:
         return v8ExternalStringSlow(isolate, stringImpl);
     }
 
-    v8::Local<v8::String> v8ExternalString(v8::Isolate* isolate, const CompressibleString& string)
-    {
-        // Note that the last CompressibleString is not cached.
-        ASSERT(!string.isNull());
-        return v8ExternalStringSlow(isolate, string);
-    }
-
     void setReturnValueFromString(v8::ReturnValue<v8::Value> returnValue, StringImpl* stringImpl)
     {
         ASSERT(stringImpl);
@@ -128,21 +91,16 @@ public:
     void dispose();
 
     friend class StringCacheMapTraits;
-    friend class CompressibleStringCacheMapTraits;
 
 private:
     v8::Local<v8::String> v8ExternalStringSlow(v8::Isolate*, StringImpl*);
-    v8::Local<v8::String> v8ExternalStringSlow(v8::Isolate*, const CompressibleString&);
     void setReturnValueFromStringSlow(v8::ReturnValue<v8::Value>, StringImpl*);
     v8::Local<v8::String> createStringAndInsertIntoCache(v8::Isolate*, StringImpl*);
-    v8::Local<v8::String> createStringAndInsertIntoCache(v8::Isolate*, const CompressibleString&);
     void InvalidateLastString();
 
     StringCacheMapTraits::MapType m_stringCache;
     StringCacheMapTraits::MapType::PersistentValueReference m_lastV8String;
 
-    CompressibleStringCacheMapTraits::MapType m_compressibleStringCache;
-
     // Note: RefPtr is a must as we cache by StringImpl* equality, not identity
     // hence lastStringImpl might be not a key of the cache (in sense of identity)
     // and hence it's not refed on addition.