Refactor GuestViewContainer to split out WebView related logic and MimeHandlerView related logic.

extensions/renderer/guest_view/guest_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 CHROME_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_
-#define CHROME_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_
+#ifndef EXTENSIONS_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_
+#define EXTENSIONS_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_
 
-#include <queue>
-
-#include "base/memory/linked_ptr.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/values.h"
 #include "content/public/renderer/browser_plugin_delegate.h"
 #include "content/public/renderer/render_frame_observer.h"
-#include "extensions/renderer/scoped_persistent.h"
+#include "ipc/ipc_message.h"
 
 namespace extensions {
 
 class GuestViewContainer : public content::BrowserPluginDelegate,
                            public content::RenderFrameObserver {
  public:
-  // This class represents an AttachGuest request from Javascript. It includes
-  // the input parameters and the callback function. The Attach operation may
-  // not execute immediately, if the container is not ready or if there are
-  // other attach operations in flight.
-  class AttachRequest {
-   public:
-    AttachRequest(int element_instance_id,
-                  int guest_instance_id,
-                  scoped_ptr<base::DictionaryValue> params,
-                  v8::Handle<v8::Function> callback,
-                  v8::Isolate* isolate);
-    ~AttachRequest();
-
-    int element_instance_id() const { return element_instance_id_; }
-
-    int guest_instance_id() const { return guest_instance_id_; }
-
-    base::DictionaryValue* attach_params() const {
-      return params_.get();
-    }
-
-    bool HasCallback() const;
-
-    v8::Handle<v8::Function> GetCallback() const;
-
-    v8::Isolate* isolate() const { return isolate_; }
-
-   private:
-    const int element_instance_id_;
-    const int guest_instance_id_;
-    scoped_ptr<base::DictionaryValue> params_;
-    ScopedPersistent<v8::Function> callback_;
-    v8::Isolate* const isolate_;
-  };
-
-  GuestViewContainer(content::RenderFrame* render_frame,
-                     const std::string& mime_type);
+  explicit GuestViewContainer(content::RenderFrame* render_frame);
   ~GuestViewContainer() override;
 
-  static GuestViewContainer* FromID(int render_view_routing_id,
-                                    int element_instance_id);
-
-  void AttachGuest(linked_ptr<AttachRequest> request);
-
   // BrowserPluginDelegate implementation.
   void SetElementInstanceID(int element_instance_id) override;
-  void DidFinishLoading() override;
-  void DidReceiveData(const char* data, int data_length) override;
-  void Ready() override;
 
   // RenderFrameObserver override.
   void OnDestruct() override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
- private:
-  void OnCreateMimeHandlerViewGuestACK(int element_instance_id);
-  void OnGuestAttached(int element_instance_id, int guest_proxy_routing_id);
+  virtual bool HandlesMessage(const IPC::Message& message) = 0;
+  virtual bool OnMessage(const IPC::Message& message) = 0;
 
-  void AttachGuestInternal(linked_ptr<AttachRequest> request);
-  void EnqueueAttachRequest(linked_ptr<AttachRequest> request);
-  void PerformPendingAttachRequest();
-  void HandlePendingResponseCallback(int guest_proxy_routing_id);
-
-  static bool ShouldHandleMessage(const IPC::Message& mesage);
-
-  const std::string mime_type_;
+ protected:

[Fady Samuel, 2014/11/04 11:47:50]

I'd prefer if these member variables are private and we instead provide public
const accessors. That way we know only this base class and modify these
variables.

[raymes, 2014/11/04 22:56:08]

Done.

   int element_instance_id_;
-  std::string html_string_;
-  // Save the RenderView RoutingID here so that we can use it during
-  // destruction.
   int render_view_routing_id_;
 
-  bool attached_;
-  bool ready_;
-
-  std::deque<linked_ptr<AttachRequest> > pending_requests_;
-  linked_ptr<AttachRequest> pending_response_;
-
   DISALLOW_COPY_AND_ASSIGN(GuestViewContainer);
 };
 
 }  // namespace extensions
 
-#endif  // CHROME_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_
+#endif  // EXTENSIONS_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_