Support embedded plugins with MimeHandlerView.

extensions/renderer/guest_view/mime_handler_view_container.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 EXTENSIONS_RENDERER_GUEST_VIEW_MIME_HANDLER_VIEW_CONTAINER_H_
 #define EXTENSIONS_RENDERER_GUEST_VIEW_MIME_HANDLER_VIEW_CONTAINER_H_
 
 #include "extensions/renderer/guest_view/guest_view_container.h"
+#include "third_party/WebKit/public/platform/WebURLLoader.h"
+#include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
+#include "url/gurl.h"
 
 namespace extensions {
 
-class MimeHandlerViewContainer : public GuestViewContainer {
+class MimeHandlerViewContainer : public GuestViewContainer,
+                                 public blink::WebURLLoaderClient {
  public:
   MimeHandlerViewContainer(content::RenderFrame* render_frame,
-                           const std::string& mime_type);
+                           const std::string& mime_type,
+                           const GURL& original_url);
   ~MimeHandlerViewContainer() override;
 
   // BrowserPluginDelegate implementation.
   void DidFinishLoading() override;
   void DidReceiveData(const char* data, int data_length) override;
+  void Ready() override;
 
-  // GuestViewContainer override.
+  // GuestViewContainer overrides.
   bool HandlesMessage(const IPC::Message& message) override;
   bool OnMessage(const IPC::Message& message) override;
 
+  // WebURLLoaderClient overrides.
+  void didReceiveData(blink::WebURLLoader* loader,
+                      const char* data,
+                      int data_length,
+                      int encoded_data_length) override;
+  void didFinishLoading(blink::WebURLLoader* loader,
+                        double finish_time,
+                        int64_t total_encoded_data_length) override;
+
  private:
+  // Message handlers.
   void OnCreateMimeHandlerViewGuestACK(int element_instance_id);
 
+  void CreateMimeHandlerViewGuest();
+
+  // The MIME type of the plugin.
   const std::string mime_type_;
+
+  // The URL of the extension to navigate to.
   std::string html_string_;
 
+  // Whether the plugin is embedded or not.
+  bool is_embedded_;
+
+  // The original URL of the plugin.
+  GURL original_url_;
+
+  // A URL loader to load the |original_url_| when the plugin is embedded. In
+  // the embedded case, no URL request is made automatically.
+  scoped_ptr<blink::WebURLLoader> loader_;
+
   DISALLOW_COPY_AND_ASSIGN(MimeHandlerViewContainer);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_GUEST_VIEW_MIME_HANDLER_VIEW_CONTAINER_H_