Introduce MIDIInputMap and MIDIOutputMap.

Source/modules/webmidi/MIDIInputMap.h

Index: Source/modules/webmidi/MIDIInputMap.h
diff --git a/Source/modules/webmidi/MIDIInputMap.h b/Source/modules/webmidi/MIDIInputMap.h
new file mode 100644
index 0000000000000000000000000000000000000000..c990d49787901b2b114fb23b8546112c82c8718c
--- /dev/null
+++ b/Source/modules/webmidi/MIDIInputMap.h
@@ -0,0 +1,26 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MIDIInputMap_h
+#define MIDIInputMap_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/webmidi/MIDIInput.h"
+#include "modules/webmidi/MIDIPortMap.h"
+
+namespace blink {
+
+class ScriptState;
+
+class MIDIInputMap : public MIDIPortMap<MIDIInput>, public ScriptWrappable {
+public:
+    MIDIInputMap(const HeapHashMap<String, Member<MIDIInput> >map)

[haraken, 2014/09/02 01:20:40]

Add explicit.

[yhirano, 2014/09/02 04:43:06]

Done.

+        : MIDIPortMap<MIDIInput>(map) { ScriptWrappable::init(this); }

[haraken, 2014/09/02 01:20:40]

Nit: Blink normally writes '{ ... }' in separate lines if you cannot write all
of the method definitions in one line.

  void foo() { return m_foo; }

or

  void foo()
  {
    return m_foo;
  }

[yhirano, 2014/09/02 04:43:06]

Done (move the implementation to the cpp file).

+
+    ScriptValue getForBinding(ScriptState*, const String& id);
+};
+
+} // namespace blink
+
+#endif