Re-land 16025005 with fix for statics perf issue

content/renderer/media/renderer_webmidiaccessor_impl.h

Index: content/renderer/media/renderer_webmidiaccessor_impl.h
diff --git a/content/renderer/media/renderer_webmidiaccessor_impl.h b/content/renderer/media/renderer_webmidiaccessor_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..a6a07c9702c69b4d7dcc9e2fc399a45839235bf0
--- /dev/null
+++ b/content/renderer/media/renderer_webmidiaccessor_impl.h
@@ -0,0 +1,41 @@
+// Copyright (c) 2013 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 CONTENT_RENDERER_MEDIA_RENDERER_WEBMIDIACCESSOR_IMPL_H_
+#define CONTENT_RENDERER_MEDIA_RENDERER_WEBMIDIACCESSOR_IMPL_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "third_party/WebKit/public/platform/WebMIDIAccessor.h"
+#include "third_party/WebKit/public/platform/WebMIDIAccessorClient.h"
+
+namespace content {
+
+class MIDIMessageFilter;
+
+class RendererWebMIDIAccessorImpl
+    : public WebKit::WebMIDIAccessor {
+ public:
+  explicit RendererWebMIDIAccessorImpl(
+      WebKit::WebMIDIAccessorClient* client);
+  virtual ~RendererWebMIDIAccessorImpl();
+
+  // WebKit::WebMIDIAccessor implementation.
+  virtual void requestAccess(bool access) OVERRIDE;
+  virtual void sendMIDIData(unsigned port_index,
+                            const unsigned char* data,
+                            size_t length,
+                            double timestamp) OVERRIDE;
+
+ private:
+  WebKit::WebMIDIAccessorClient* client_;
+
+  MIDIMessageFilter* midi_message_filter();
+
+  DISALLOW_COPY_AND_ASSIGN(RendererWebMIDIAccessorImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_RENDERER_WEBMIDIACCESSOR_IMPL_H_