[bindings] Pass v8::Local<v8::Value> by value in NativeValueTraits<T>::nativeValue()

Source/bindings/core/v8/V8Binding.h

 /*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2012 Ericsson AB. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
@@ skipping 823 matching lines @@
         exceptionState.rethrowV8Exception(block.Exception());
         return false;
     }
 
     length = sequenceLength;
     return true;
 }
 
 template<>
 struct NativeValueTraits<String> {
-    static inline String nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
+    static inline String nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState& exceptionState)
     {
         V8StringResource<> stringValue(value);
         if (!stringValue.prepare(exceptionState))
             return String();
         return stringValue;
     }
 };
 
 template<>
 struct NativeValueTraits<int> {
-    static inline int nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
+    static inline int nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState& exceptionState)
     {
         return toInt32(value, exceptionState);
     }
 };
 
 template<>
 struct NativeValueTraits<unsigned> {
-    static inline unsigned nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
+    static inline unsigned nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState& exceptionState)
     {
         return toUInt32(value, exceptionState);
     }
 };
 
 template<>
 struct NativeValueTraits<float> {
-    static inline float nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
+    static inline float nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState& exceptionState)
     {
         return toFloat(value, exceptionState);
     }
 };
 
 template<>
 struct NativeValueTraits<double> {
-    static inline double nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
+    static inline double nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState& exceptionState)
     {
         return toDouble(value, exceptionState);
     }
 };
 
 template<>
 struct NativeValueTraits<v8::Local<v8::Value>> {
-    static inline v8::Local<v8::Value> nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState&)
+    static inline v8::Local<v8::Value> nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState&)
     {
         return value;
     }
 };
 
 template<>
 struct NativeValueTraits<ScriptValue> {
-    static inline ScriptValue nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState&)
+    static inline ScriptValue nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState&)
     {
         return ScriptValue(ScriptState::current(isolate), value);
     }
 };
 
 template <typename T>
 struct NativeValueTraits<Vector<T>> {
-    static inline Vector<T> nativeValue(const v8::Local<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
+    static inline Vector<T> nativeValue(v8::Local<v8::Value> value, v8::Isolate* isolate, ExceptionState& exceptionState)
     {
         return toImplArray<T>(value, 0, isolate, exceptionState);
     }
 };
 
 CORE_EXPORT v8::Isolate* toIsolate(ExecutionContext*);
 v8::Isolate* toIsolate(LocalFrame*);
 
 DOMWindow* toDOMWindow(v8::Isolate*, v8::Handle<v8::Value>);
 DOMWindow* toDOMWindow(v8::Handle<v8::Context>);
@@ skipping 145 matching lines @@
 
 // Callback functions used by generated code.
 void v8ConstructorAttributeGetterAsProperty(v8::Local<v8::String> propertyName, const v8::PropertyCallbackInfo<v8::Value>&);
 void v8ConstructorAttributeGetterAsAccessor(const v8::FunctionCallbackInfo<v8::Value>&);
 
 typedef void (*InstallTemplateFunction)(v8::Local<v8::FunctionTemplate>, v8::Isolate*);
 
 } // namespace blink
 
 #endif // V8Binding_h