Make WebMIDI use blink Promise.

Source/bindings/v8/MIDIAccessResolver.cpp

Index: Source/bindings/v8/MIDIAccessResolver.cpp
diff --git a/LICENSE b/Source/bindings/v8/MIDIAccessResolver.cpp
similarity index 61%
copy from LICENSE
copy to Source/bindings/v8/MIDIAccessResolver.cpp
index 70bcb8ad118978579fa055f7ecc99604930900ce..d6a5e6e2ab445c6f61435a614161efb10928c556 100644
--- a/LICENSE
+++ b/Source/bindings/v8/MIDIAccessResolver.cpp
@@ -28,3 +28,40 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "config.h"
+#include "bindings/v8/MIDIAccessResolver.h"
+
+#include "bindings/v8/ScriptPromiseResolver.h"
+#include "bindings/v8/V8Binding.h"
+#include <v8.h>
+
+namespace WebCore {
+
+MIDIAccessResolver::MIDIAccessResolver(PassRefPtr<ScriptPromiseResolver> resolver, v8::Isolate* isolate)
+    : m_resolver(resolver)
+    , m_world(DOMWrapperWorld::current(isolate))
+{
+}
+
+MIDIAccessResolver::~MIDIAccessResolver()
+{
+}
+
+void MIDIAccessResolver::resolve(MIDIAccess* access, ExecutionContext* executionContext)
+{
+    v8::HandleScope handleScope(toIsolate(executionContext));
+    v8::Context::Scope contextScope(toV8Context(executionContext, m_world.get()));
+
+    m_resolver->resolve(access, executionContext);
+}
+
+void MIDIAccessResolver::reject(DOMError* error, ExecutionContext* executionContext)
+{
+    v8::HandleScope handleScope(toIsolate(executionContext));
+    v8::Context::Scope contextScope(toV8Context(executionContext, m_world.get()));
+
+    m_resolver->reject(error, executionContext);
+}
+
+} // namespace WebCore