bindings: Add C++ versions of WebIDL types and generalize NativeValueTraits.

third_party/WebKit/Source/bindings/tests/results/core/V8TestException.cpp

Index: third_party/WebKit/Source/bindings/tests/results/core/V8TestException.cpp
diff --git a/third_party/WebKit/Source/bindings/tests/results/core/V8TestException.cpp b/third_party/WebKit/Source/bindings/tests/results/core/V8TestException.cpp
index 13d501853b1b8bf2c92f8dafcc6b708aa1fa2f39..eb98877280a0810f5d154ba222326fe4195154e2 100644
--- a/third_party/WebKit/Source/bindings/tests/results/core/V8TestException.cpp
+++ b/third_party/WebKit/Source/bindings/tests/results/core/V8TestException.cpp
@@ -12,6 +12,8 @@
 #include "V8TestException.h"
 
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/IDLTypes.h"
+#include "bindings/core/v8/NativeValueTraitsImpl.h"
 #include "bindings/core/v8/V8DOMConfiguration.h"
 #include "bindings/core/v8/V8ObjectConstructor.h"
 #include "core/dom/Document.h"
@@ -83,7 +85,7 @@ static void constructor(const v8::FunctionCallbackInfo<v8::Value>& info) {
   }
 
   uint16_t argument;
-  argument = toUInt16(info.GetIsolate(), info[0], NormalConversion, exceptionState);
+  argument = NativeValueTraits<IDLUnsignedShort>::nativeValue(info.GetIsolate(), info[0], exceptionState, NormalConversion);
   if (exceptionState.hadException())
     return;
 
@@ -168,4 +170,8 @@ TestException* V8TestException::toImplWithTypeCheck(v8::Isolate* isolate, v8::Lo
   return hasInstance(value, isolate) ? toImpl(v8::Local<v8::Object>::Cast(value)) : nullptr;
 }
 
+TestException* NativeValueTraits<TestException>::nativeValue(v8::Isolate* isolate, v8::Local<v8::Value> value, ExceptionState& exceptionState) {
+  return V8TestException::toImplWithTypeCheck(isolate, value);
+}
+
 }  // namespace blink