Apply OwnPtr|PassOwnPtr to handle member variables and arguments in MIDIClient

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 11df1f3f62de0004d6636c61b418a41a7b9ad9e9..f78a37ad22dd9af925608a00c4abeeb19122ca65 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -365,7 +365,6 @@ WebViewImpl::WebViewImpl(WebViewClient* client)
     , m_speechRecognitionClient(SpeechRecognitionClientProxy::create(client ? client->speechRecognizer() : 0))
     , m_geolocationClientProxy(adoptPtr(new GeolocationClientProxy(client ? client->geolocationClient() : 0)))
     , m_userMediaClientImpl(this)
-    , m_midiClientProxy(adoptPtr(new MIDIClientProxy(client ? client->webMIDIClient() : 0)))
     , m_flingModifier(0)
     , m_flingSourceDevice(false)
     , m_fullscreenController(FullscreenController::create(this))
@@ -391,7 +390,7 @@ WebViewImpl::WebViewImpl(WebViewClient* client)
     m_page = adoptPtr(new Page(pageClients));
     provideUserMediaTo(*m_page, &m_userMediaClientImpl);
     MediaKeysController::provideMediaKeysTo(*m_page, &m_mediaKeysClientImpl);
-    provideMIDITo(*m_page, m_midiClientProxy.get());
+    provideMIDITo(*m_page, MIDIClientProxy::create(client ? client->webMIDIClient() : 0));
 #if ENABLE(INPUT_SPEECH)
     provideSpeechInputTo(*m_page, m_speechInputClient.get());
 #endif