[Binding] [Refactoring] Make SerializedScriptValueWriter protected

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

Index: third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.h b/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.h
index 4eb6246855d435553cdc6113ba1aa75624bf735f..4a4700c9ff661a87d71808c6f7c6bd6833b3ef26 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.h
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.h
@@ -110,8 +110,13 @@ public:
     {
     }
 
-    // Write functions for primitive types.
+    // TODO(peria): Protect this mehtod.
+    String takeWireString();
+
+protected:
+    friend class ScriptValueSerializer;
 
+    // Write functions for primitive types.
     void writeUndefined();
     void writeNull();
     void writeTrue();
@@ -149,7 +154,6 @@ public:
     void writeObject(uint32_t numProperties);
     void writeSparseArray(uint32_t numProperties, uint32_t length);
     void writeDenseArray(uint32_t numProperties, uint32_t length);
-    String takeWireString();
     void writeReferenceCount(uint32_t numberOfReferences);
     void writeGenerateFreshObject();
     void writeGenerateFreshSparseArray(uint32_t length);
@@ -159,7 +163,6 @@ public:
     void writeMap(uint32_t length);
     void writeSet(uint32_t length);
 
-protected:
     void doWriteFile(const File&);
     void doWriteArrayBuffer(const DOMArrayBuffer&);
     void doWriteString(const char* data, int length);
@@ -216,6 +219,9 @@ public:
     Status serialize(v8::Local<v8::Value>);
     String errorMessage() { return m_errorMessage; }
 
+    static String serializeWTFString(const String&);
+    static String serializeNullValue();
+
 protected:
     class StateBase {
         USING_FAST_MALLOC(StateBase);