Web MIDI: implement MIDIAccess

Source/modules/webmidi/MIDIAccess.idl

Index: Source/modules/webmidi/MIDIAccess.idl
diff --git a/Source/modules/webmidi/MIDIPort.idl b/Source/modules/webmidi/MIDIAccess.idl
similarity index 76%
copy from Source/modules/webmidi/MIDIPort.idl
copy to Source/modules/webmidi/MIDIAccess.idl
index 226387cb79bd5825f319434d94eaf5f4135610e8..04a1096f1598e609ac31e40d7e7a7a980ad6268c 100644
--- a/Source/modules/webmidi/MIDIPort.idl
+++ b/Source/modules/webmidi/MIDIAccess.idl
@@ -28,21 +28,21 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-enum MIDIPortType {
-    "input",
-    "output"
-};
-
 [
     ActiveDOMObject,
     EventTarget
-] interface MIDIPort {
-    readonly attribute DOMString id;
-    readonly attribute DOMString manufacturer;
-    readonly attribute DOMString name;
-    readonly attribute MIDIPortType type;
-    readonly attribute DOMString version;
+] interface MIDIAccess {
+    sequence<MIDIPort> getInputs();
+    sequence<MIDIPort> getOutputs();
+    [RaisesException] MIDIInput getInput(MIDIPort target);
+    // FIXME: Following two [StrictTypeChecking] should be removed once http://crbug.com/235884 is fixed.
+    [RaisesException] MIDIInput getInput([StrictTypeChecking] DOMString target);
+    [RaisesException] MIDIInput getInput(short target);
+    [RaisesException] MIDIOutput getOutput(MIDIPort target);
+    [RaisesException] MIDIOutput getOutput([StrictTypeChecking] DOMString target);
+    [RaisesException] MIDIOutput getOutput(short target);
 
+    attribute EventListener onconnect;
     attribute EventListener ondisconnect;
 
     // EventTarget interface