Adding MimeHandlerView.

content/public/renderer/browser_plugin_delegate.h

+// 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 CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_
+#define CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_
+
+#include <string>
+
+#include "content/common/content_export.h"
+
+namespace content {
+
+// Maybe BrowserPluginLoadObserver?
+class CONTENT_EXPORT BrowserPluginDelegate {
+ public:
+  BrowserPluginDelegate(int routing_id, const std::string& mime_type) {}
+  virtual ~BrowserPluginDelegate() {}
+
+  virtual void SetElementInstanceID(int element_instance_id) {}
+  virtual void DidFinishLoading() {}
+  virtual void DidReceiveData(const char* data, int data_length) {}
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_RENDERER_BROWSER_PLUGIN_DELEGATE_H_