[bindings] Utilize ScriptValue::from and remove IDB* => ScriptValue conversion methods

Source/bindings/modules/v8/V8BindingForModules.h

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8BindingForModules_h
 #define V8BindingForModules_h
 
 #include "bindings/core/v8/V8Binding.h"
 #include "modules/webdatabase/sqlite/SQLValue.h"
 
 namespace blink {
 
 class IDBAny;
 class IDBKey;
 class IDBKeyPath;
 class IDBKeyRange;
 class SerializedScriptValue;
 class SharedBuffer;
 class WebBlobInfo;
 
 // Exposed for unit testing:
 bool injectV8KeyIntoV8Value(v8::Isolate*, v8::Local<v8::Value> key, v8::Local<v8::Value>, const IDBKeyPath&);
 
 // For use by Source/modules/indexeddb:
 IDBKey* createIDBKeyFromScriptValueAndKeyPath(v8::Isolate*, const ScriptValue&, const IDBKeyPath&);
 bool canInjectIDBKeyIntoScriptValue(v8::Isolate*, const ScriptValue&, const IDBKeyPath&);
-ScriptValue idbAnyToScriptValue(ScriptState*, IDBAny*);
-ScriptValue idbKeyToScriptValue(ScriptState*, const IDBKey*);
-ScriptValue idbKeyPathToScriptValue(ScriptState*, const IDBKeyPath&);
 IDBKey* scriptValueToIDBKey(v8::Isolate*, const ScriptValue&);
 IDBKeyRange* scriptValueToIDBKeyRange(v8::Isolate*, const ScriptValue&);
 ScriptValue deserializeScriptValue(ScriptState*, SerializedScriptValue*, const Vector<blink::WebBlobInfo>*);
 
 #if ENABLE(ASSERT)
 void assertPrimaryKeyValidOrInjectable(ScriptState*, PassRefPtr<SharedBuffer>, const Vector<blink::WebBlobInfo>*, IDBKey*, const IDBKeyPath&);
 #endif
 
 template <>
 struct NativeValueTraits<SQLValue> {
-    static SQLValue nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
-    {
-        if (value.IsEmpty() || value->IsNull())
-            return SQLValue();
-        if (value->IsNumber())
-            return SQLValue(value->NumberValue());
-        V8StringResource<> stringValue(value);
-        if (!stringValue.prepare(exceptionState))
-            return SQLValue();
-        return SQLValue(stringValue);
-    }
+    static SQLValue nativeValue(const v8::Local<v8::Value>&, v8::Isolate*, ExceptionState&);
+};
+
+template <>
+struct NativeValueTraits<IDBKey*> {
+    static IDBKey* nativeValue(const v8::Local<v8::Value>&, v8::Isolate*, ExceptionState&);
+};
+
+template <>
+struct NativeValueTraits<IDBKeyRange*> {
+    static IDBKeyRange* nativeValue(const v8::Local<v8::Value>&, v8::Isolate*, ExceptionState&);
 };
 
 } // namespace blink
 
 #endif // V8BindingForModules_h