[bindings] Introduce ScriptValue.to<T> to convert to native values.

Source/bindings/modules/v8/V8BindingForModules.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 381 matching lines @@
     IDBParseKeyPath(keyPath.string(), keyPathElements, error);
     ASSERT(error == IDBKeyPathParseErrorNone);
 
     if (!keyPathElements.size())
         return false;
 
     v8::Local<v8::Value> v8Value(scriptValue.v8Value());
     return canInjectNthValueOnKeyPath(isolate, v8Value, keyPathElements, keyPathElements.size() - 1);
 }
 
-IDBKey* scriptValueToIDBKey(v8::Isolate* isolate, const ScriptValue& scriptValue)
-{
-    ASSERT(isolate->InContext());
-    v8::HandleScope handleScope(isolate);
-    v8::Local<v8::Value> v8Value(scriptValue.v8Value());
-    return createIDBKeyFromValue(isolate, v8Value);
-}
-
-IDBKeyRange* scriptValueToIDBKeyRange(v8::Isolate* isolate, const ScriptValue& scriptValue)
-{
-    v8::HandleScope handleScope(isolate);
-    v8::Local<v8::Value> value(scriptValue.v8Value());
-    return V8IDBKeyRange::toImplWithTypeCheck(isolate, value);
-}
-
 ScriptValue deserializeScriptValue(ScriptState* scriptState, SerializedScriptValue* serializedValue, const Vector<blink::WebBlobInfo>* blobInfo)
 {
     v8::Isolate* isolate = scriptState->isolate();
     v8::HandleScope handleScope(isolate);
     if (serializedValue)
         return ScriptValue(scriptState, serializedValue->deserialize(isolate, 0, blobInfo));
     return ScriptValue(scriptState, v8::Null(isolate));
 }
 
 SQLValue NativeValueTraits<SQLValue>::nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
@@ skipping 30 matching lines @@
     const bool allowExperimentalTypes = true;
     IDBKey* expectedKey = createIDBKeyFromScriptValueAndKeyPathInternal(isolate, scriptValue, keyPath, allowExperimentalTypes);
     ASSERT(!expectedKey || expectedKey->isEqual(key));
 
     bool injected = injectV8KeyIntoV8Value(isolate, keyValue.v8Value(), scriptValue.v8Value(), keyPath);
     ASSERT_UNUSED(injected, injected);
 }
 #endif
 
 } // namespace blink