Web MIDI: introduce WebMIDIClient API to request a permission

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 404 matching lines @@
     , m_compositorCreationFailed(false)
     , m_recreatingGraphicsContext(false)
 #if ENABLE(INPUT_SPEECH)
     , m_speechInputClient(SpeechInputClientImpl::create(client))
 #endif
     , m_speechRecognitionClient(SpeechRecognitionClientProxy::create(client ? client->speechRecognizer() : 0))
     , m_deviceOrientationClientProxy(adoptPtr(new DeviceOrientationClientProxy(client ? client->deviceOrientationClient() : 0)))
     , m_geolocationClientProxy(adoptPtr(new GeolocationClientProxy(client ? client->geolocationClient() : 0)))
     , m_emulatedTextZoomFactor(1)
     , m_userMediaClientImpl(this)
+    , m_midiClientImpl(this)
 #if ENABLE(NAVIGATOR_CONTENT_UTILS)
     , m_navigatorContentUtilsClient(NavigatorContentUtilsClientImpl::create(this))
 #endif
     , m_flingModifier(0)
     , m_flingSourceDevice(false)
     , m_showFPSCounter(false)
     , m_showPaintRects(false)
     , m_showDebugBorders(false)
     , m_continuousPaintingEnabled(false)
     , m_showScrollBottleneckRects(false)
 {
     Page::PageClients pageClients;
     pageClients.chromeClient = &m_chromeClientImpl;
     pageClients.contextMenuClient = &m_contextMenuClientImpl;
     pageClients.editorClient = &m_editorClientImpl;
     pageClients.dragClient = &m_dragClientImpl;
     pageClients.inspectorClient = &m_inspectorClientImpl;
     pageClients.backForwardClient = &m_backForwardClientImpl;
 
     m_page = adoptPtr(new Page(pageClients));
     provideUserMediaTo(m_page.get(), &m_userMediaClientImpl);
+    provideMIDITo(m_page.get(), &m_midiClientImpl);
 #if ENABLE(INPUT_SPEECH)
     provideSpeechInputTo(m_page.get(), m_speechInputClient.get());
 #endif
     provideSpeechRecognitionTo(m_page.get(), m_speechRecognitionClient.get());
 #if ENABLE(NOTIFICATIONS) || ENABLE(LEGACY_NOTIFICATIONS)
     provideNotification(m_page.get(), notificationPresenterImpl());
 #endif
 #if ENABLE(NAVIGATOR_CONTENT_UTILS)
     provideNavigatorContentUtilsTo(m_page.get(), m_navigatorContentUtilsClient.get());
 #endif
@@ skipping 3707 matching lines @@
 }
 
 bool WebViewImpl::shouldDisableDesktopWorkarounds()
 {
     ViewportArguments arguments = mainFrameImpl()->frame()->document()->viewportArguments();
     return arguments.width == ViewportArguments::ValueDeviceWidth || !arguments.userZoom
         || (arguments.minZoom == arguments.maxZoom && arguments.minZoom != ViewportArguments::ValueAuto);
 }
 
 } // namespace WebKit